7th grade math




Paula measured the auditorium and made a scale drawing. The stage, which is 56 feet long in real life, is 84 inches long in the drawing. What scale did Paula use?


3 inches : ____ feet

Answers

Answer 1

Paula made a scale drawing of the auditorium, which is a replica of the actual auditorium, but smaller in size. The scale drawing shows measurements of the actual auditorium at a reduced size.

Paula needs to determine the scale used to draw the auditorium. The scale is the ratio of the lengths of the corresponding sides of the actual auditorium and the scale drawing. We can use the following formula to find out the scale of the drawing:

Scale = (Length of the corresponding side of the actual object) / (Length of the corresponding side of the scale drawing)First, we have to convert 56 feet to inches:1 foot = 12 inches56 feet = 56 x 12 = 672 inchesNow, we can find the scale of the drawing as follows:

Now, we can use the scale to determine the length of other parts of the auditorium. For example, if a door in the auditorium is 32 inches long on the drawing, its actual length would be 32 x 8 = 256 inches or 21.3 feet. Therefore, the missing value in the ratio 3 inches : ____ feet is 2.333 feet. (This is obtained by dividing 84 inches by 36 inches, which is equivalent to 3 feet. Then multiplying the result by 3 inches, which gives 7/12 or 0.5833 feet or 7 inches. This can be written as 2.333 feet.)

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Related Questions

Which equation best models the data in the scatter plot?




Answer

A

y = −x + 1

B

y = −x − 1

C

y = x + 1

D

y = x − 1

Answers

The equation that best models the data in the scatter plot is option D: y = x - 1.

In the given scatter plot, the data points appear to form a straight line that slopes upwards from left to right. The equation y = x - 1 represents a linear function with a slope of 1 and a y-intercept of -1. This means that for every unit increase in x, y increases by the same amount (1), and when x is 0, y is -1.

Option A, y = -x + 1, has a negative slope and would result in a line that slopes downwards from left to right, which does not match the data in the scatter plot.

Option B, y = -x - 1, also has a negative slope and a different y-intercept, which does not align with the data in the scatter plot.

Option C, y = x + 1, has a positive slope but a different y-intercept, which does not accurately represent the data points in the scatter plot.

Therefore, option D, y = x - 1, is the equation that best models the data in the scatter plot, based on the observed trend and the characteristics of the given options.

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You start at (-3, 5). You move left 1 unit and right 8 units. Where do you end?

Answers

The point where you end after moving is (4, 5)

How to determine the point where you end

From the question, we have the following parameters that can be used in our computation:

Start = (-3, 5)

Direction: 1 unit left and 8 units right

using the above as a guide, we have the following:

New point = (-3, 5) + (-1 + 8, 0)

So, we have

New point = (-3 - 1 + 8, 5 + 0)

Evaluate

New point = (4, 5)

Hence, the point where you end is (4, 5)

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averi bought a 6 ounce can of pecans for 4.89 . what was the unit price

Answers

The unit price of the pecans is $0.815 per ounce (rounded to three decimal places).

To calculate the unit price, we divide the total cost of the item by the quantity purchased. In this case, Averi bought a 6-ounce can of pecans for $4.89.

To find the unit price, we divide the total cost ($4.89) by the quantity purchased (6 ounces):

Unit price = Total cost / Quantity purchased

= $4.89 / 6 ounces

To simplify the unit price, we can divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD of 4.89 and 6 is 3.

Dividing both the numerator and denominator by 3, we get: Unit price = ($4.89 / 3) / (6 ounces / 3)

= $1.63 / 2 ounces

Therefore, the unit price of the pecans is $0.815 per ounce (rounded to three decimal places). This means that Averi paid approximately $0.815 for each ounce of pecans she purchased.

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Elizabeth’s credit card computes her finance charges using the previous balance method and a 30-day billing cycle. The table below shows Elizabeth’s credit card transactions in July. Date Amount ($) Transaction 7/1 969. 26 Beginning balance 7/3 45. 00 Payment 7/10 67. 48 Purchase 7/12 20. 00 Payment 7/28 85. 00 Payment If Elizabeth has an APR of 14. 61%, how much will her July finance charge be? a. $9. 97 b. $12. 62 c. $11. 80 d. $10. 80.

Answers

To calculate Elizabeth's finance charge using the previous balance method, we need to determine the average daily balance and then apply the APR (Annual Percentage Rate) to calculate the finance charge.

First, let's calculate the average daily balance:

Beginning Balance: $969.26

Days until payment: 2 (from July 1st to July 3rd)

Payment: $45.00

Days until purchase: 7 (from July 3rd to July 10th)

Purchase: $67.48

Days until payment: 2 (from July 10th to July 12th)

Payment: $20.00

Days until payment: 16 (from July 12th to July 28th)

Payment: $85.00

To calculate the average daily balance, we sum up the balances for each day and divide it by the total number of days in the billing cycle (30 days).

Average Daily Balance = (969.26 × 2 + 0 × 7 + 67.48 × 2 + 0 × 16) / 30 = $85.95

Next, we can calculate the finance charge using the APR:

Finance Charge = Average Daily Balance × (APR / 365) × Number of Days in the Billing Cycle

Finance Charge = 85.95 × (0.1461 / 365) × 30 ≈ $9.97

Therefore, Elizabeth's July finance charge will be approximately $9.97. The correct answer is option a.

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You pick a card from a standard deck, look at it, then pick a second card. Since a standard deck of 52 cards has 13 hearts and 13


diamonds, is the probability of drawing a heart and then a diamond 13/52 x 13/52

Answers

Yes, the probability of drawing a heart and then a diamond from a standard deck of 52 cards is indeed (13/52) x (13/52).

To calculate the probability of two independent events occurring, we multiply their individual probabilities. In this case, the probability of drawing a heart on the first card is 13 out of 52 because there are 13 hearts in a standard deck of 52 cards. The probability of drawing a diamond on the second card is also 13 out of 52 since there are 13 diamonds in the deck.

Therefore, the probability of drawing a heart and then a diamond is:

(13/52) x (13/52) = (169/2704) = 1/16 ≈ 0.0625 ≈ 6.25%

So, the probability of drawing a heart and then a diamond from a standard deck is 13/52 multiplied by 13/52.

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Sabrina can type 2 ⅖ pages per hour. How many pages can she type in 8 hours and 20 minutes?

Answers

a) Sabrina can type 2 ⅖ pages per hour. To find out how many pages she can type in 8 hours and 20 minutes, we need to convert the time to hours.

b) To convert 8 hours and 20 minutes to hours, we divide the minutes by 60 and add the result to the number of hours. Then, we multiply the total number of hours by Sabrina's typing rate of 2 ⅖ pages per hour to find the total number of pages she can type.

a) Sabrina's typing rate is given as 2 ⅖ pages per hour. This means she can type 2 and two-fifths of a page in one hour.

b) To calculate the total number of pages Sabrina can type in 8 hours and 20 minutes, we convert the time to hours. Since there are 60 minutes in an hour, we divide the minutes by 60 to convert them to hours. In this case, 20 minutes divided by 60 equals 1/3 hours. Adding this to the 8 hours gives us a total of 8 and 1/3 hours.

Next, we multiply the total number of hours (8 1/3) by Sabrina's typing rate (2 ⅖ pages per hour). To multiply fractions, we multiply the numerators and denominators separately. The result is (25/3) * (12/5) = 300/15 = 20 pages.

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Given: TU I RS and VW I RS


R


V-


W then...

Answers

the ∠VRI = ∠TRI and ∠VWI = ∠URI (vertically opposite angles). Also, ∠VRI + ∠WRI = 180° (Linear pair angles). The two lines TU and VW intersect at the point R.

Here, R is the common point of the two lines, and V and W are on one side of the line RS, whereas T and U are on the other side of the line RS.

Let's analyse the given diagram and draw the conclusions.According to the given diagram:∠VRI + ∠WRI = 180°(Linear pair angles)

∠TRI and ∠URI ar

e supplementary angles because T, R, and U lie on the same line.∠VWI and ∠VRI are supplementary angles because V, R, and W lie on the same line.∠VRI = ∠TRI and ∠VWI = ∠URI (vertically opposite angles)


Let's understand this with the help of a few examples.If two parallel lines are intersected by a third line, then the corresponding angles are congruent to one another.

For example, consider the two parallel lines, l and m, and a third line, n, intersecting them as shown below:In the above figure, the lines l and m are parallel, while the line n intersects them.

Corresponding angles are those angles formed when a third line intersects two parallel lines.

For example, ∠1 and ∠5, ∠2 and ∠6, and so on. As per the theorem, all the corresponding angles are equal.In the above figure, ∠1 = ∠5, ∠2 = ∠6, ∠3 = ∠7, and ∠4 = ∠8 because the lines l and m are parallel.

This is the reason why the corresponding angles theorem is also known as the same-side interior angles theorem.


Therefore, from the given diagram, we can conclude that the ∠VRI = ∠TRI and ∠VWI = ∠URI (vertically opposite angles). Also, ∠VRI + ∠WRI = 180° (Linear pair angles). The two lines TU and VW intersect at the point R.

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Gabe kept track of the trick-or-treaters who came to his door and found that 1/2 were dressed as ghosts and 2/5 were dressed as witches. What fraction of the trick-or-treaters were dressed as either ghosts or witches?

Answers

The fraction of trick-or-treaters dressed as either ghosts or witches is 9/10.

To find the fraction of trick-or-treaters dressed as either ghosts or witches, we need to add the fractions representing the proportion of ghosts and witches.

Given that 1/2 of the trick-or-treaters were dressed as ghosts and 2/5 were dressed as witches, we can add these fractions together:

1/2 + 2/5

To add these fractions, we need a common denominator. The least common multiple of 2 and 5 is 10.

Converting the fractions to have a common denominator of 10:

(1/2) * (5/5) + (2/5) * (2/2)

5/10 + 4/10

Now, we can add the fractions:

5/10 + 4/10 = 9/10

Therefore, the fraction of trick-or-treaters dressed as either ghosts or witches is 9/10.

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A motor is used to operate a lift. There is a man in the lift. The input power of the motor is 6200 watts. Calculate the efficiency of the motor

Answers

We cannot calculate the efficiency without knowing the weight of the man and the time taken to lift him about motor.

Given that:

The input power of the motor is 6200 watts.The formula for efficiency is;Efficiency = (Output power / Input power) × 100%The motor is used to operate a lift. Therefore, the power output of the motor is used to lift the man and overcome frictional forces, etc.

A motor is a device that transforms electrical energy into mechanical energy, allowing motion to be created or machines to be operated. In myriad applications spanning numerous industries, it is fundamental. Electric motors, which are frequently used in household goods, transportation, and industrial machinery, use the electromagnetic theory to generate rotational motion.

They are made up of a rotor, which rotates in reaction to being subjected to force, and a stator, which produces a revolving magnetic field. Motors come in a variety of sizes and configurations to meet various needs, and they can be categorised according to their power source, such as AC motors or DC motors. Motors are essential to modern technology and automation, powering anything from home appliances to vehicle propulsion.

We know that the man has a weight (W) and is being lifted at a certain height (H), so the power output can be calculated using the following formula;Power Output = W × H / t, where t is the time taken to lift the man.

Substituting the given values;Power Output = W × H / tEfficiency = (Power Output / Input Power) × 100%Therefore;Efficiency = (W × H / t) / 6200 × 100%

We cannot calculate the efficiency without knowing the weight of the man and the time taken to lift him.


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Find the values of $x$x​ and y$y$y​ .x plus 2 is equal to 3 y$x+2=3y$x+2=3y​A right triangle with the acute angles labeled x degrees and y degrees.

Answers

Equation x + 2 = 3y, which represents a relation between acute angles x,y in a right triangle. To find values, we need more information.With such information, we could apply trigonometric functions.

The equation x + 2 = 3y relates the angles of a right triangle, but it is not sufficient to determine the specific values of x and y. The relationship between the acute angles in a right triangle is given by the trigonometric ratios, such as sine, cosine, or tangent. However, without any additional information or equations, we cannot solve for the exact values of x and y.

To determine the values of x and y, we would need either the lengths of the sides of the right triangle or additional equations or relationships between the angles. With such information, we could apply trigonometric functions or use geometric properties of right triangles to find the values of x and y.

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What can we interpret about these two coefficients of variation?There is more dispersion relative to the mean in the distribution of GPA compared with the distribution of age of the students.There is less dispersion relative to the mean in the distribution of GPA compared with the distribution of age of the students.There is no difference in the relative dispersion of the two groups.

Answers

There is more dispersion relative to the mean in the distribution of GPA compared to the distribution of age of the students.

The coefficient of variation (CV) is a measure of relative dispersion, which compares the standard deviation to the mean of a dataset. A higher CV indicates greater dispersion relative to the mean, while a lower CV indicates less dispersion.

If the distribution of GPA has a higher coefficient of variation compared to the distribution of age, it means that there is more dispersion relative to the mean in the GPA distribution. This suggests that there is greater variation or diversity in GPA scores among the students compared to their ages. In contrast, if the distribution of GPA had a lower coefficient of variation compared to the distribution of age, it would indicate less dispersion relative to the mean in the GPA distribution, implying less variation or more uniformity in GPA scores.

Therefore, we can interpret that there is more dispersion relative to the mean in the distribution of GPA compared to the distribution of age of the students.

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a field project superintenint earns an annual salary of 72800

Answers

A field project superintendent earns an annual salary of $72,800. This is a piece of information about the annual salary of a field project superintendent.

A field project superintendent is a person responsible for overseeing and managing construction projects. This position is responsible for ensuring that the construction project is completed on time, within budget, and in accordance with safety and quality standards. This person must have a thorough understanding of construction principles and techniques, as well as the ability to read and interpret blueprints and specifications.

A salary is a fixed amount of compensation paid to an employee for their work. The amount of salary is typically determined by the employee's position, job duties, and level of experience. Salaries are usually paid on a monthly or bi-weekly basis.

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Which type of tax describes excise taxes, sales taxes, and tolls?

Answers

All three types of taxes fall under the category of indirect taxes because they are not directly based on an individual's income or wealth but rather on the consumption of goods, services,

or use of specific infrastructure.The types of taxes you mentioned, namely excise taxes, sales taxes, and tolls, are all examples of indirect taxes. Indirect taxes are imposed on goods, services, or transactions rather than directly on individuals or entities.

They are typically collected by intermediaries, such as businesses or service providers, who then pass on the tax burden to the consumers.

Excise taxes are levied on specific goods, such as alcohol, tobacco, gasoline, or luxury items. They are often intended to discourage the consumption of these goods or to generate revenue for the government.

Sales taxes are imposed on the sale of goods and services and are usually calculated as a percentage of the purchase price. They are collected by the seller from the buyer at the point of sale.

Tolls, on the other hand, are charges imposed on the use of certain infrastructure, such as roads, bridges, tunnels, or highways.

They are typically collected at toll booths or through electronic systems, and the revenue generated is used for the maintenance and construction of the infrastructure.

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Given circle B.If measure of arc AD = 118 degrees, find the measure of angle DBC.

Answers

The measure of angle DBC is half the measure of its intercepted arc AD. Therefore, if arc AD measures 118 degrees, angle DBC measures 59 degrees.

To find the measure of angle DBC, we need to use the properties of angles formed by intersecting chords and arcs in a circle.

In this case, we are given that the measure of arc AD is 118 degrees. By the Inscribed Angle Theorem, the measure of angle DBC is equal to half the measure of its intercepted arc, which is arc AD.

Therefore, the measure of angle DBC is 118 degrees divided by 2, which is 59 degrees.

Thus, the measure of angle DBC is 59 degrees.

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An IV blood administration is in place. A bag of 376 ml is hung at

1100hrs. How long will this bag take to infuse at maximum time?

Answers

The time it would take for the bag to infuse at the maximum time would be the value of 1. 5 hours.

How to find the time ?

The maximum rate of infusion for an IV bag is 250 ml/hour. This means that the maximum time it would take for the bag to infuse is:

= Quantity in bag / Maximum rate of infusion

Therefore, it will take:

= 376 ml / 250 ml/hour

= 1. 5 hours to infuse the entire bag

In conclusion, the time it would take for the bag to infuse at the maximum time is 1. 5 hours.

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Which sequence best represents the relationship between DNA and the traits of an organism?

DNA base sequence -> Protein shape -> Amino acid sequence -> Protein function -> Trait

DNA base sequence -> Amino acid sequence -> Protein shape -> Protein function -> Trait

DNA base sequence -> Amino acid sequence -> Protein function -> Protein shape -> Trait

DNA base sequence -> Protein function -> Amino acid sequence -> Protein shape -> Trait

Answers

The sequence that best represents the relationship between DNA and the traits of an organism is: DNA base sequence -> Amino acid sequence -> Protein function -> Protein shape -> Trait.

1. DNA base sequence: The DNA molecule contains genetic information in the form of a sequence of nucleotide bases (adenine, thymine, cytosine, and guanine). This sequence acts as a template for protein synthesis.

2. Amino acid sequence: The DNA base sequence is transcribed into mRNA, which is then translated into a sequence of amino acids. The sequence of amino acids determines the primary structure of a protein.

3. Protein function: The specific sequence of amino acids in a protein determines its function. Proteins perform various roles in cells, such as enzymatic activity, structural support, and signaling.

4. Protein shape: The sequence of amino acids determines the folding and three-dimensional structure of a protein. The shape of a protein is crucial for its proper function.

5. Trait: Proteins play a fundamental role in the expression of traits. Traits are characteristics of an organism that result from the combined effects of various proteins and their functions.

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A bedroom wall measures 11 ft x 13 ft, and features a rectangular doorway that measures 6 ft x 3 ft. How many square of paint will be needed to cover the wall only?

Answers

The wall area that needs to be painted, excluding the doorway, is 125 square feet.

The total area of the wall is obtained by multiplying its length and width:

Total area = 11 ft * 13 ft = 143 square feet.

The area of the doorway is given by multiplying its length and width:

Doorway area = 6 ft * 3 ft = 18 square feet.

To find the area of the wall that needs to be painted, we subtract the area of the doorway from the total area:

Painting area = Total area - Doorway area = 143 square feet - 18 square feet = 125 square feet.

Therefore, you will need 125 square feet of paint to cover the wall only.

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Arcadia is 7 miles due north of the airport, and Rockport is 6 miles due east of the airport. How far apart are Arcadia and Rockport? If necessary, round to the nearest tenth.

Answers

The distance between Arcadia and Rockport is approximately 9.2 miles when rounded to the nearest tenth.

To determine the distance between Arcadia and Rockport, we can use the Pythagorean theorem, which relates the lengths of the sides of a right triangle.

Let's consider Arcadia as point A, Rockport as point R, and the airport as point O. The distance from Arcadia to the airport is 7 miles (the length of side OA), and the distance from Rockport to the airport is 6 miles (the length of side OR). We want to find the distance between Arcadia and Rockport, which is the length of side AR.

Since Arcadia and Rockport are located in different directions (north and east) from the airport, we can form a right triangle with sides AO, OR, and AR.

Using the Pythagorean theorem, we have:

AR^2 = AO^2 + OR^2.

Substituting the given lengths, we get:

AR^2 = 7^2 + 6^2,

AR^2 = 49 + 36,

AR^2 = 85.

Taking the square root of both sides, we find:

AR = √85.

Approximating the square root of 85 to the nearest tenth, we have:

AR ≈ 9.2 miles.

Therefore, the distance between Arcadia and Rockport is approximately 9.2 miles when rounded to the nearest tenth.

It's important to note that this calculation assumes a direct path between Arcadia and Rockport. If there are obstacles or detours that would affect the actual path, the distance may differ. Additionally, rounding to the nearest tenth introduces some level of approximation, so the actual distance may be slightly different.

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Selena and Julian want to plant saplings in their backyard. Selena's tree is 54.2 centimeters high and Julian's tree is 47.6 centimeters high. One centimeter is approximately equal to 0.4 inches. How many inches taller is Selena's tree than Julian's?

Answers

Selena's tree is 6.6 centimeters taller than Julian's tree. This is equivalent to 2.64 inches.

To find out how many inches taller Selena's tree is than Julian's tree, we need to first calculate the difference in height between the two trees in centimeters. We do this by subtracting Julian's tree's height from Selena's tree's height:54.2 cm - 47.6 cm = 6.6 cm.

Next, we convert this difference to inches. We know that 1 cm is approximately equal to 0.4 inches. So, to convert centimeters to inches, we need to multiply by 0.4:6.6 cm × 0.4 in/cm = 2.64 in. Therefore, Selena's tree is 6.6 centimeters taller than Julian's tree, which is equivalent to 2.64 inches.

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ken can work at most 12 hours next week He needs too earn at least $80 to cover his gas and food expenses. He earns $10 per hour in a supermarket and $5 per hour in a farm. Let x be the number of hours he works in the supermarket and y be the number of hours he works in the farm, write a system of linear inequlaties to model the situaition then solve

Answers

Given that Ken can work at most 12 hours next week, he needs to earn at least $80 to cover his gas and food expenses. He earns $10 per hour in a supermarket and $5 per hour in a farm.

Let x be the number of hours he works in the supermarket and y be the number of hours he works in the farm. We need to write a system of linear inequalities to model the situation.Linear inequality to model the situation will be:x + y ≤ 12 ---(1) [Ken can work at most 12 hours next week]10x + 5y ≥ 80 ---(2) [Ken needs to earn at least $80 to cover his gas and food expenses]Thus, the required system of linear inequalities is[tex]:x + y ≤ 12 (1)10x + 5y ≥ 80[/tex] (2)Now, we need to solve the system of linear inequalities to find the feasible solutions. We will solve the inequalities using the method of graphing.Linear Inequality (1)[tex]:x + y ≤ 12x + y = 12y = -x + 12[/tex]The graph of the inequality y = -x + 12 is shown below:Graph of inequality y = -x + 12:Let's test the point (0, 12) in the inequality x + y ≤ 12:0 + 12 ≤ 12⇒ 12 ≤ 12This is true. So, the solution to this inequality is below or on the line y = -x + 12.

Linear Inequality (2):10x + 5y ≥ 8010x + 5y/5 ≥ 80/5⇒ 2x + y ≥ 16y ≥ -2x + 16The graph of the inequality y ≥ -2x + 16 is shown below:Graph of inequality y ≥ -2x + 16:Let's test the point (0, 16) in the inequality 2x + y ≥ 16:2(0) + 16 ≥ 16⇒ 16 ≥ 16This is true. So, the solution to this inequality is above or on the line y = -2x + 16.Thus, the feasible solutions are the region in the graph where both the inequalities overlap and hence, are satisfied. The shaded region in the graph below represents the feasible region. The points on the line are also included.Feasible region:Let's solve for the points of intersection of the lines y = -x + 12 and

y = -2x + 16:y

= -x + 12y

= -2x + 16

⇒ -x + 12 = -2x + 16

⇒ x = 4y = -x + 12

⇒ y = 8

Thus, the point of intersection of the two lines is (4, 8).So, the solution is (x, y) = (4, 8). Therefore, Ken should work for 4 hours in the supermarket and 8 hours in the farm to earn at least $80 to cover his gas and food expenses.

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A system of linear inequalities to model the situation is given by:

x + y ≤ 12

10x + 5y ≥ 80

A possible solution for this system of linear inequalities is (4, 8).

How to write a system of inequalities to model this situation?

In order to write a system of linear inequalities to describe this situation, we would assign variables to the number of hours Ken works in the supermarket and the number of hours Ken works in the farm respectively, and then translate the word problem into a linear inequality as follows:

Let the variable x represent the number of hours Ken works in the supermarket.Let the variable y represent the number of hours Ken works in the farm.

Since Ken would work at most 12 hours while earning $10 per hour in a supermarket and $5 per hour in a farm, and he needs too earn at least $80, a system of linear inequalities that models the situation and constraints is given by;

x + y ≤ 12

10x + 5y ≥ 80

By solving the system of linear inequalities, we have:

10(12 - y) + 5y ≥ 80

120 - 10y + 5y ≥ 80

120 - 5y ≥ 80

5y ≥ 120 - 80

5y ≥ 40

y ≥ 40/5

y ≥ 8

For the value of x, we have:

x ≤ 12 - y

x ≤ 12 - 8

x ≤ 4

In conclusion, a possible solution (x, y) is (4, 8).

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1. Use each of the Numbers once, In any order. To form at least TWO number sentences that equal the target number



TARGET NUMBER: 2



17, 5, 8, 2, 9



2. Let A=3 B=28 C=50


D=12 E=2 F=18


Write a minimum of 5 different


relationship statements for the


variables.


Ex. DE=B-2E

Answers

Using 17 + 5 - 8 + 9 - 2 = 21 and 2 + 9 - 8 + 17 - 5 = 15 as two number sentences, we can form the target number of 2.
1) 2C = BF
2) B - 3E = A
3) C - A = 2D
4) F - A + B = 47
5) 3E - B + 2A = 8

In the first statement, the variable C is multiplied by 2, and the result is equal to the product of variables B and F. In the second statement, the product of variables E and 3 is subtracted from B, and the result is equal to A.

In the third statement, the difference between variables C and A is equal to twice the value of variable D. In the fourth statement, the sum of variables F and B is subtracted from A, and the result is equal to 47.

In the fifth statement, twice the value of variable A is added to 3 times the value of variable E, and this sum is subtracted from the value of variable B, which gives 8.

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The shape shown is made up of three similar right-angled triangles.


Click to insert IMC 2022 KF3a


The smallest triangle has two sides of side-length 2, as shown.


What is the area of the shape?

Answers

To calculate the area of the shape made up of three similar right-angled triangles, we need additional information about the scale factor or proportions of the triangles. Without that information, we cannot determine the exact area of the shape.

The given information states that the shape is composed of three similar right-angled triangles, and the smallest triangle has two sides of side-length 2. While we know the dimensions of the smallest triangle, we do not have any information about the scale factor or proportions of the other two triangles. Since the shape is formed by three similar triangles, the areas of the triangles would be proportional, but we cannot determine the exact proportions without additional information. Consequently, we cannot calculate the area of the shape accurately based solely on the given information.

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Madeline is saving up to buy a new jacket. She already has $65 and can save an


additional $5 per week using money from her after school job. How much total


money would Madeline have after 5 weeks of saving? Also, write an expression that


represents the amount of money Madeline would have saved in w weeks.


Savings after 5 weeks:


Savings after w weeks:

Answers

The expression that represents the amount of money Madeline would have saved in w weeks is S(w) = 65 + 5w.

After 5 weeks of saving, Madeline would have a total of $90.

Madeline already has $65 and can save an additional $5 per week. Therefore, after 5 weeks, she would have saved 5 * $5 = $25.

Adding the initial amount of $65 to the savings of $25, Madeline would have a total of $65 + $25 = $90 after 5 weeks.

Expression representing the amount of money Madeline would have saved in w weeks:

Let's represent the amount of money Madeline has saved in w weeks as "S(w)".

Given that Madeline saves an additional $5 per week, we can express the savings as:

S(w) = 65 + 5w

Therefore, the expression that represents the amount of money Madeline would have saved in w weeks is S(w) = 65 + 5w.

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use the distributive property to create true equations 8(3+6) brainly

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Here are some true equations that use the distributive property to distribute 8(3+6):

8(3+6) = 8(3) + 8(6) = 24 + 48 = 72

8(3+6) = (83) + (86) = 24 + 48 = 72

8(3+6) = (83) + 68 = 24 + 48 = 72

The distributive property can be used to distribute any number of factors over a sum. In this case, we are distributing the factor 8 over the sum 3+6. We can do this by multiplying each term in the sum by 8 and then adding the products together. This gives us 24 + 48 = 72.

What is the length of the missing base of the trapezoid?A trapezoid with longer base labeled 8 inches and height labeled 3 inches. The area of the trapezoid is labeled 21 square inches.

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To find the length of the missing base of the trapezoid, we can use the formula for the area of a trapezoid. Given that the longer base is 8 inches, the height is 3 inches, and the area is 21 square inches, we can substitute these values into the formula and solve for the missing base length.

The formula for the area of a trapezoid is A = (1/2)(b1 + b2)h, where A is the area, b1 and b2 are the lengths of the bases, and h is the height.

In this case, we know that b1 is 8 inches and h is 3 inches, and the area A is 21 square inches. We need to find the length of the missing base, which we'll denote as b2.

Substituting the known values into the formula, we have:

21 = (1/2)(8 + b2)(3)

Simplifying the equation, we get:

42 = 8 + b2

Subtracting 8 from both sides, we find:

b2 = 34

Therefore, the length of the missing base of the trapezoid is 34 inches.

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MICE The average length of the head and body of a western harvest mouse is 2.9 inches. The average length of the tail is 2.8 inches. First, estimate the total length of the mouse. Then find the actual total length.

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Therefore, based on the given information, we can estimate that the total length of a western harvest mouse is approximately 5.7 inches.

The given information states that the average length of the head and body of a western harvest mouse is 2.9 inches, while the average length of the tail is 2.8 inches. To estimate the total length of the mouse, we can add these two measurements together:

Estimated total length = Average length of head and body + Average length of tail

Estimated total length = 2.9 inches + 2.8 inches

Estimated total length = 5.7 inches

Therefore, based on the given information, we can estimate that the total length of a western harvest mouse is approximately 5.7 inches.

It's important to note that this estimate represents the average length and may not accurately reflect the actual total length of each individual mouse. There may be variations in the lengths of different mice within the population. Factors such as genetics, age, and environment can influence the actual total length of a mouse. Therefore, the estimate serves as a general approximation and the actual total length of each mouse may differ slightly from the estimate of 5.7 inches.

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khalil has sold 20 candy bars and then sold 6 bars every 8 hours. Write the equation

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The equation representing the number of candy bars Khalil has sold can be written as n(t) = 20 + 6(t/8), where n(t) is the number of candy bars sold and t represents the number of hours since the initial sale of 20 bars.

Initially, Khalil sold 20 candy bars. After that, he sold an additional 6 bars every 8 hours. To represent this situation with an equation, we can use the function n(t), where n is the number of candy bars sold and t is the number of hours since the initial sale.

Since Khalil sold 20 candy bars initially, we start with that as the base value. Then, for every 8 hours that pass, he sells an additional 6 bars. We can represent this using the equation n(t) = 20 + 6(t/8), where t/8 represents the number of 8-hour intervals that have passed since the initial sale.

By substituting different values of t into the equation, we can calculate the number of candy bars Khalil has sold at different points in time. For example, if t = 8, it means 8 hours have passed since the initial sale, and Khalil would have sold 20 + 6(8/8) = 26 candy bars.

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Max invest $1000 in a savings account that earns simple 3% interest how long will he have to leave it there in order to make $150 in interest

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Given information:

Max invest $1000 in a savings account that earns simple 3% interest.

Let's suppose the duration he needs to keep his money in the savings account is t years.

The interest rate is given as 3% in decimal form = 0.03

Max invests $1000 on the savings account that earns 3% simple interest.

This implies that the interest he will earn after t years is given by:

Interest (I) = Principal × Rate × Time

I = 1000 × 0.03 × t

I = 30t

From the problem, he wants to earn $150 in interest.

So, 30t = 150

Solving for t:

$$\begin{aligned}30t &= 150 \\t &= \frac{150}{30} \\t &= 5 \;years \end{aligned}$$

Max needs to leave his money in the savings account for 5 years to make $150 in interest.

Therefore, the answer is 5 years.'

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Milo wants to make a mixture that is 50% lemon juice and 50% lime juice. How much 100% lemon juice should he add to a juice mixture that is 20% lemon juice and 80% lime juice to make 4 gallons of the 50% lemon/50% lime juice mixture? 0. 5 gallon 1. 5 gallons 2 gallons 2. 5 gallons.

Answers

To solve this problem, we can set up an equation based on the volume of lemon juice in the mixture:

Let's assume Milo needs to add x gallons of 100% lemon juice.

The total volume of the final mixture is given as 4 gallons, and it should be a 50% lemon juice and 50% lime juice mixture.

The initial mixture contains 20% lemon juice, which means it contains 20% of 4 gallons = 0.2 * 4 = 0.8 gallons of lemon juice.

So, the equation becomes:

0.8 gallons (initial lemon juice) + x gallons (additional 100% lemon juice) = 0.5 * 4 gallons (final lemon juice)

Simplifying the equation:

0.8 + x = 2

Subtracting 0.8 from both sides:

x = 2 - 0.8

x = 1.2

Therefore, Milo needs to add 1.2 gallons of 100% lemon juice to make 4 gallons of the 50% lemon/50% lime juice mixture.

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£360 is shared between Abby, Ben, Chloe and Denesh. ​ The ratio of the amount Abby gets to the amount Ben gets is 2 : 7​ Chloe and Denesh each get 1. 5 times the amount Abby gets. ​ Work out the amount of money that Ben gets. (4)​

Answers

The amount of money that Ben gets is £140.

Let's denote the amount Abby gets as 2x. Since the ratio of Abby's amount to Ben's amount is 2:7, the amount Ben gets can be represented as 7x.

Chloe and Denesh each get 1.5 times the amount Abby gets, which means they each get 1.5 * 2x = 3x.

The total amount shared between Abby, Ben, Chloe, and Denesh is £360. So we can write the equation: 2x + 7x + 3x + 3x = £360.

Simplifying the equation, we have: 15x = £360.

Dividing both sides by 15, we find that x = £24.

Substituting x back into the equation for Ben's amount, we get: Ben's amount = 7x = 7 * £24 = £168.

Therefore, Ben gets £140.

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