the DJIA closed at approximately 8,634.86 points on December 5th, 2008. Therefore, option C is the closest answer.
To calculate the closing value on December 5th, we need to perform the following steps:
Calculate the decrease on December 4th: 2.51% of 8,591.69 = 215.64 points.
Subtract the decrease from the December 3rd closing value: 8,591.69 - 215.64 = 8,376.05 points.
Calculate the increase on December 5th: 3.09% of 8,376.05 = 258.69 points.
Add the increase to the December 4th closing value: 8,376.05 + 258.69 = 8,634.74 points.
Rounding to the nearest point, the DJIA closed at approximately 8,634.86 points on December 5th, 2008. Therefore, option C is the closest answer.
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Leo made a 69, 84, 67, and an 81 on the first four tests. What score would he have to make on the 5th test in order to make at least a B in the course? Based on your answer, is it likely that Leo will make a B? Why or why not?
Leo would need to score at least 99 on the 5th test to achieve at least a B in the course. The likelihood of Leo making a B would depend on his individual abilities, preparation, and performance on the 5th test.
To determine what score Leo would need on the 5th test to achieve at least a B in the course, we first need to know the grading scale or criteria for the course. Different educational institutions and instructors may use different grading scales, so without that information, it is not possible to provide an exact answer.
However, assuming a common grading scale where:
A: 90-100
B: 80-89
C: 70-79
D: 60-69
F: Below 60
We can calculate the average score Leo needs to achieve a B. To find the average, we sum up the scores and divide by the total number of tests:
(69 + 84 + 67 + 81 + x) / 5 >= 80
Simplifying the equation:
301 + x >= 400
x >= 400 - 301
x >= 99
Therefore, Leo would need to score at least 99 on the 5th test to achieve at least a B in the course.
As for whether it is likely that Leo will make a B, it depends on various factors. If Leo has consistently performed well in the course and has a history of earning high scores on tests, it is possible that he can achieve a score of 99 or higher on the 5th test. However, if Leo has struggled in the course or has not performed well on previous tests, it may be challenging for him to score high enough on the 5th test to reach a B. The likelihood of Leo making a B would depend on his individual abilities, preparation, and performance on the 5th test.
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On a map, the scale is 2 inches = 7 miles. What is the actual distance between the two cities if the map distance is 3 inches?
Please help
The actual distance between the two cities is 10.5 miles
How to calculate the actual distance between the two citiesFrom the question, we have the following parameters that can be used in our computation:
Scale: 2 inches = 7 miles
Given that
Map distance = 3 inches
using the above as a guide, we have the following:
1.5 * 2 inches = 7 miles * 1.5
Evaluate the products
3 inches = 10.5 miles
Hence, the actual distance between the two cities is 10.5 miles
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A car dealership buys a used car for $18,790. They mark-up the car by 20%. How much are you as the buyer going to pay?
Therefore, as the buyer, you will pay $22,548 for the used car after the dealership marks it up by 20%.
To calculate the price you, as the buyer, will pay after the car dealership marks up the car by 20%, you need to add the markup amount to the original price.
Markup amount = 20% of $18,790
Markup amount = 0.20 * $18,790
Markup amount = $3,758
The markup amount is $3,758.
To determine the final price you will pay, you need to add the markup amount to the original price:
Final price = Original price + Markup amount
Final price = $18,790 + $3,758
Final price = $22,548
Therefore, as the buyer, you will pay $22,548 for the used car after the dealership marks it up by 20%.
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In 1990, Jerry´s gross pay was $78,000.
A. What was his gross monthly pay?
B. In What month did Jerry hit the maximum taxable Social Security Income?
C. How much Social Security tax did Jerry pay in January of 1990?
D. How much Social Security tax did Jerry pay in December of 1990?
Show Work
A. Jerry paid $403 in Social Security tax both in January and December.
What was Jerry's gross monthly pay? To calculate Jerry's gross monthly pay, you will need to divide his gross pay of $78,000 by the number of months in a year, which is 12.Gross Monthly Pay= Gross Pay/12= $78,000/12= $6,500B. In what month did Jerry hit the maximum taxable Social Security Income?
The maximum taxable Social Security income is $51,300. This implies that Social Security tax is applied only on the first $51,300 of Jerry's income. Jerry's gross pay was $78,000; thus, the maximum taxable Social Security Income for Jerry is $51,300.
Social Security tax is calculated on gross pay, not net income. Jerry will hit the maximum taxable Social Security Income as soon as he earns $51,300 for the year.
The social security tax will no longer be deducted from his paychecks for the remainder of the year. This will occur at the point when Jerry's gross pay equals the maximum taxable Social Security income.
This occurs in August. Gross monthly pay is $6,500. Thus, by August, Jerry will have earned $51,300 (8*$6,500).C. How much Social Security tax did Jerry pay in January of 1990?
Social Security tax rate for 1990 was 6.2 percent of gross pay. This implies that Jerry paid 6.2 percent of his gross pay as Social Security tax. Social Security Tax paid in January= Gross Monthly Pay * Social Security Tax Rate= $6,500 * 6.2%= $403D. How much Social Security tax did Jerry pay in December of 1990?
Social Security tax rate for 1990 was 6.2 percent of gross pay.
This implies that Jerry paid 6.2 percent of his gross pay as Social Security tax. Social Security Tax paid in December= Gross Monthly Pay * Social Security Tax Rate= $6,500 * 6.2%= $403
Hence, Jerry paid $403 in Social Security tax both in January and December.
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Janis needs 3 gallons of lemonade for a party she has 4/4 six prints and 4 cups of lemonade or ready-made how many more cups of lemonade does Janice need
Janis needs 3 gallons of lemonade for the party. She already has 4/4 six-packs and 4 cups of ready-made lemonade. The task is to determine how many more cups of lemonade Janis needs to meet the required amount.
To find the answer, we need to convert the gallons of lemonade into cups. Since 1 gallon is equal to 16 cups, 3 gallons would be equal to 3 * 16 = 48 cups.
Janis already has 4 six-packs, which means she has 4 * 6 = 24 cups of lemonade from the six-packs. Adding the 4 cups of ready-made lemonade, Janis has a total of 24 + 4 = 28 cups of lemonade.
To determine how many more cups of lemonade Janis needs, we subtract the cups she already has from the required amount. Thus, 48 - 28 = 20 more cups of lemonade are needed for the party.
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If f(x)=x-1/3 and g(x)=3x+1 what is (f times g)(x)?
3x+1
x-3
3x
x
The expression (f times g)(x) represents the product of the functions f(x) and g(x). In this case, f(x) = x - 1/3 and g(x) = 3x + 1. To find the product, we substitute g(x) into f(x) and simplify the expression.
When we substitute g(x) into f(x), we get:
(f times g)(x) = f(g(x)) = f(3x + 1)
Now, substituting the expression for f(x) into f(g(x)), we have:
f(g(x)) = (3x + 1) - 1/3
Simplifying further, we combine like terms:
= 3x + 1 - 1/3
Thus, the product of f(x) and g(x), (f times g)(x), simplifies to:
(f times g)(x) = 3x + 1 - 1/3
(f times g)(x) equals 3x + 1 - 1/3.
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The five members of the Treanor family each buy train tickets during the train ride each family member buys a box lunch for $6.50 if the total cost of the trip is $248.50 what is the price of each train ticket
Let's assume the price of each train ticket is x dollars.
Since there are five family members and each of them buys a train ticket, the total cost of the train tickets would be 5x dollars.
In addition to the train tickets, each family member also buys a box lunch for $6.50. Since there are five family members, the total cost of the box lunches would be 5 * $6.50 = $32.50.
Given that the total cost of the trip is $248.50, we can set up the equation:
5x + $32.50 = $248.50
Subtracting $32.50 from both sides of the equation:
5x = $248.50 - $32.50
5x = $216
Dividing both sides of the equation by 5:
x = $216 / 5
x ≈ $43.20
Therefore, the price of each train ticket is approximately $43.20.
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Terrence is recording what kind of shoes people are wearing at the mall. Out of the 20 people he has seen, 2 are wearing sneakers. What is the experimental probability that the next person Terrence sees will be wearing sneakers?
Terrence saw, and out of those, only two people were wearing sneakers. Therefore, the probability of the next person Terrence sees wearing sneakers is 2/20 or 0.1 or 10%.
The experimental probability of an event happening is the ratio of the number of times the event occurs to the number of trials, i.e., the number of opportunities for the event to happen.Here, Terrence recorded what kind of shoes people are wearing at the mall.
He found out that 2 out of the 20 people he has seen are wearing sneakers. We can determine the experimental probability of the next person Terrence sees wearing sneakers with this information.The experimental probability that the next person Terrence sees will be wearing sneakers can be calculated as follows:Probability of seeing the next person wearing sneakers = Number of people wearing sneakers / Total number of people seen= 2/20
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(3. ) At the baseball game, you saw Jane. Jane told you that he
made $52. 09 at the last game selling a total of 31 items
consisting of soda or popcorn. If Jane makes $1 selling popcorn
and $2. 11 selling soda, how many items of popcorn was sold?
Let's assume that Jane sold "x" items of popcorn at $1 each and "y" items of soda at $2.11 each. Since Jane sold a total of 31 items, we can write the equation x + y = 31. We also know that Jane made a total of $52.09, so we can write another equation as x + 2.11y = 52.09.
To solve these equations, we can use substitution. Rearranging the first equation, we get x = 31 - y.
of x into the second equation, we have (31 - y) + 2.11y = 52.09.
Simplifying the equation, we get 31 + 1.11y = 52.09. Subtracting 31 from both sides, we have 1.11y = 21.09. Dividing both sides by 1.11, we find y = 19.
Therefore, Jane sold 19 items of soda. To find the number of popcorn items, we substitute this value of y back into the first equation: x + 19 = 31. Subtracting 19 from both sides, we find x = 12.
Hence, Jane sold 12 items of popcorn.
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The area of the Pacific Ocean is 165 million km2. If we imagine an area of 11 million km2, what is the ratio of this area to the area of the Pacific Ocean? Enter your answer as a fraction.
To find the ratio of the area of 11 million km² to the area of the Pacific Ocean (165 million km²), we can express it as a fraction:
Ratio = Area of 11 million km² / Area of the Pacific Ocean
Ratio = 11 million km² / 165 million km²
To simplify the fraction, we can divide both the numerator and the denominator by 11 million:
Ratio = (11 million km² / 11 million km²) / (165 million km² / 11 million km²)
Ratio = 1/15
Therefore, the ratio of the area of 11 million km² to the area of the Pacific Ocean is 1/15.
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In a cricket league, 145 players play in 10 different teams. Each team has at least 14 players.What is the largest possible number of players in any one team?
the largest possible number of players in any one team is 15.
In a cricket league, 145 players play in 10 different teams. Each team has at least 14 players. The largest possible number of players in any one team is 16.
How to find out the largest possible number of players in any one team?
We have to divide the total number of players by the total number of teams and round down the result since each team has to have at least 14 players.
145 players ÷ 10 teams = 14 remainder 5
So, there are 10 teams of 14 players and 1 team of 15 players.
However, we want the largest possible number of players in one team, so we give the extra player to the team with the highest number of players.
This means that one team has 15 players and all the other teams have 14 players. Therefore, the largest possible number of players in any one team is 15.
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Select at least two digital communication strategies you can control to protect yourself. Explain why you chose them and how they can safeguard you if you feel like someone is trying to cause you harm.
Two digital communication strategies you can control to protect yourself are:
1. **Strong Passwords**: One of the most effective ways to safeguard your digital communication is by using strong, unique passwords for your online accounts. A strong password should be a combination of upper and lowercase letters, numbers, and special characters. By using strong passwords and regularly updating them, you can prevent unauthorized access to your accounts. This can safeguard you if someone is trying to cause harm by attempting to gain unauthorized access to your personal information or accounts.
2. **Two-Factor Authentication (2FA)**: Enabling two-factor authentication adds an extra layer of security to your digital communication. With 2FA, you need to provide a second form of verification, such as a unique code sent to your mobile device, in addition to your password, to access your accounts. This can protect you if someone manages to obtain your password, as they would still need the second factor to gain access. 2FA makes it significantly harder for malicious individuals to compromise your accounts, providing an added safeguard against potential harm.
By implementing strong passwords and enabling two-factor authentication, you enhance the security of your digital communication and reduce the risk of unauthorized access and potential harm. These strategies provide an additional barrier against malicious activities and help ensure the confidentiality and integrity of your personal information and online accounts.
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The cost c of supplies for school depends on other factors lost at least 2 independent variables that could effect the cost of school supplies
Here are two independent variables that could affect the cost of school supplies:1. Inflation Rate: The inflation rate is a measure of the overall increase in prices over time.
It can impact the cost of various goods and services, including school supplies. If the inflation rate is high, the prices of school supplies may increase, leading to higher costs for purchasing these items.
2. Demand for School Supplies: The demand for school supplies can also influence their cost. Probability of Higher demand typically leads to increased prices, as suppliers may adjust their prices to match the demand. Factors such as back-to-school seasons, educational policies, and population growth can affect the demand for school supplies.
By considering the inflation rate and the demand for school supplies as independent variables, we can better understand how these factors can impact the cost of school supplies.
However, it's important to note that there could be other variables that can also affect the cost, such as production costs, supply chain disruptions, and changes in government policies related to education or trade.
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The cost c of supplies for school depends on other factors lost at least 2 independent variables that could effect the cost of school supplies?
Plot these coordinates:(1,2),(1,7),(9,7),(9,3),(6,5). What is the area
To find the area of the region formed by the given coordinates, we can use the method of Shoelace Formula or Gauss's Area formula. The area of the polygon formed by the given coordinates is 25 square units
1. Plot the given coordinates: (1,2), (1,7), (9,7), (9,3), (6,5). These points represent the vertices of the polygon.
2. Connect the plotted points in order to form the polygon.
3. Use the Shoelace Formula or Gauss's Area formula to calculate the area of the polygon. The Shoelace Formula involves multiplying the differences of the x-coordinates with the corresponding y-coordinates and summing them up.
4. Apply the Shoelace Formula:
Area = 1/2 * |(1*7 + 1*7 + 9*3 + 9*2 + 6*7) - (2*1 + 7*9 + 7*9 + 3*6 + 5*1)|
= 1/2 * |(7 + 7 + 27 + 18 + 42) - (2 + 63 + 63 + 18 + 5)|
= 1/2 * |101 - 151|
= 1/2 * |-50|
= 25
Therefore, the area of the polygon formed by the given coordinates is 25 square units.
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Select a value to tell how each pair of angles is related.
The value to determine the relationship between each pair of angles is their sum. we can determine whether they are complementary (90 degrees), supplementary (180 degrees), or explementary (360 degrees), which helps us understand their relationship and properties.
To determine the relationship between two angles, we can consider their sum. If the sum of two angles is equal to 90 degrees, they are complementary angles. Complementary angles are pairs of angles that, when added together, result in a right angle. For example, if Angle A measures 40 degrees and Angle B measures 50 degrees, their sum is 90 degrees, so they are complementary angles.
If the sum of two angles is equal to 180 degrees, they are supplementary angles. Supplementary angles are pairs of angles that, when added together, result in a straight angle. For instance, if Angle C measures 120 degrees and Angle D measures 60 degrees, their sum is 180 degrees, so they are supplementary angles.
On the other hand, if the sum of two angles is equal to 360 degrees, they are explementary angles. Explementary angles are pairs of angles that, when added together, result in a complete revolution or a full circle. For example, if Angle E measures 120 degrees and Angle F measures 240 degrees, their sum is 360 degrees, so they are explementary angles.
By considering the sum of the angles, we can determine whether they are complementary (90 degrees), supplementary (180 degrees), or explementary (360 degrees), which helps us understand their relationship and properties.
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Find the distance between the car and the building using the angle of ddeprassion given 30° 7m
Answer:11.91 m
Step-by-step explanation:ngle of Depression is the measurement of angle between the horizontal and your line of sight (when looking down).
In this case, to get the distance between the car and the building, the height and other unknown given, just apply the SOHCAHTOA.
SOHCAHTOA, is use on how to compute the sine, cosine, and tangent of an angle. SOH stands for Sine equals Opposite over Hypotenuse. CAH stands for Cosine equals Adjacent over Hypotenuse. TOA stands for Tangent equals Opposite over Adjacent.
In the given problem, let X is the distance between the car and building. The angle of depression is 36°. Use SOH (in sohcahtoa), to solve the problem.
sin(36°) = 7/x
x = 7/sin(36°)
x = 11.91
Therefore, the distance between the car and building is 11.91 m.
What is the greatest common factor of 24s3, 12s4, and 18s?
3
6
3s
6s
Mark this and return
The greatest common factor (GCF) of the given expressions 24s^3, 12s^4, and 18s is 6s.
To find the GCF, we need to identify the highest power of each variable (s) that appears in all the expressions. In this case, the highest power of s that appears in all the expressions is s^3.Next, we consider the numerical coefficients. The GCF of the numerical coefficients 24, 12, and 18 is 6.
Finally, we combine the GCF of the numerical coefficients (6) with the highest power of the variable (s^3) to obtain the GCF of the entire expressions, which is 6s^3.Therefore, the greatest common factor of 24s^3, 12s^4, and 18s is 6s^3.
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Underline the prepositional phrases
i) I was proven innocent by virtue of the law.
ii) Don’t leave without your coat
i) I was proven innocent by virtue of the law.
ii) Don’t leave without your coat.
In sentence (i), the prepositional phrase "by virtue of" introduces the reason or cause for being proven innocent. It indicates that the law is the basis or foundation for the proof.
In sentence (ii), the prepositional phrase "without your coat" indicates the absence or lack of something. It specifies that the action of leaving should not occur unless the person has their coat with them.
Prepositional phrases consist of a preposition (such as "by," "of," or "without") followed by a noun or pronoun object. They provide additional information about location, time, manner, or other relationships in a sentence. Recognizing and understanding prepositional phrases helps in comprehending the structure and meaning of sentences.
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Kiran poured 15 cups of water into equal-sized pitchers and filled 1 1\2 pitchers. How much water was in the full pitcher? Multiplication equation: Division equation:
Step-by-step explanation:
15 cups of water fill 1 1/2 pitchers. that is 3/2 pitchers.
in one pitcher we have then 1 / 3/2 the amount of water of the 3/2 pitchers.
that means
15 × 1 / 3/2 = 15/1 × 1/1 / 3/2 = 15/1 × 2/3 = 30/3 = 10
so, in one pitcher are 10 cups of water.
5. If two angles
are not adjacent, then they do not form
a linear pair.
Converse statement
inverses statement
Contrapositive statement
conditional statement
The given statement describes a relationship between two angles that are not adjacent, stating that they do not form a linear pair. The different types of logical statementsstatements from this statement are the converse statement, inverse statement, contrapositive statement, and conditional statement.
Converse statement: The converse of a conditional statement switches the hypothesis and the conclusion. In this case, the converse statement would be: If two angles do not form a linear pair, then they are not adjacent.
Inverse statement: The inverse of a conditional statement negates both the hypothesis and the conclusion. The inverse statement would be: If two angles are adjacent, then they form a linear pair.
Contrapositive statement: The contrapositive of a conditional statement switches and negates both the hypothesis and the conclusion. The contrapositive statement would be: If two angles form a linear pair, then they are adjacent.
Conditional statement: The original statement itself is the conditional statement. It follows the form: If two angles are not adjacent, then they do not form a linear pair.
These different logical statements provide alternative ways to express the relationship between angles that are not adjacent and their formation of a linear pair.
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Santos takes the train into the city five days a week for work. For one work week he kept track of how many minutes the train ride was : 48,51,48,48,50
Calculate the mean median range in the range of the train ride times for the week
The mean train ride time for the week was 49.4 minutes, with a median of 48 minutes. The range of the train ride times was 3 minutes.
The mean, median, and range of Santos' train ride times for the week were as follows:
Mean: 49.4 minutes
The mean is calculated by adding up all the values and dividing the sum by the total number of values. In this case, the sum of the train ride times (48 + 51 + 48 + 48 + 50) is 245 minutes. Dividing this sum by the total number of days (5), we get the mean of 49.4 minutes.
Median: 48 minutes
The median is the middle value in a sorted list of numbers. To find the median, we arrange the train ride times in ascending order: 48, 48, 48, 50, 51. Since there is an odd number of values, the middle value is the median. In this case, the median is 48 minutes.
Range: 3 minutes
The range is the difference between the largest and smallest values in a set. To calculate the range, we subtract the smallest value (48 minutes) from the largest value (51 minutes). In this case, the range of the train ride times for the week is 3 minutes.
In summary, the mean train ride time for the week was 49.4 minutes, with a median of 48 minutes. The range of the train ride times was 3 minutes. These metrics provide insights into the average, central tendency, and variability of Santos' train rides throughout the week.
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_ questions can only be answered in your head
A- random
B- on-the-page
C-out-of-left-field
D- From-my-brain
Random questions can be solved in your head. option A
What is random questions?In common usage, randomness is the apparent or actual lack of pattern or predictability in information.
A random sequence of events, symbols or steps often has no order and does not follow an intelligible pattern or combination. Individual random events are, by definition, unpredictable, but if the probability distribution is known, the frequency of different outcomes over repeated events (or "trials") is predictable
A random question has no particular pattern therefore it can be asked any how.
Therefore, we can conclude that random questions can only be answered in your heard with any research.
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Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 76. 9 Mbps. The complete list of 50 data speeds has a mean of x overbar equals17. 21 Mbps and a standard deviation of sequals 32. 78 Mbps. A. What is the difference between carrier's highest data speed and the mean of all 50 data speeds? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the carrier's highest data speed to a z score. D. If we consider data speeds that convert to z scores between minus 2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant?
a) The difference between the carrier's highest data speed (76.9 Mbps) and the mean of all 50 data speeds (17.21 Mbps) is 59.69 Mbps.
b) To determine how many standard deviations the difference found in part (a) represents, we can use the formula: z = (x - μ) / σ, where z is the number of standard deviations, x is the data point, μ is the mean, and σ is the standard deviation. In this case, the difference of 59.69 Mbps can be divided by the standard deviation of 32.78 Mbps to find the number of standard deviations.
c) To convert the carrier's highest data speed (76.9 Mbps) to a z score, we use the formula: z = (x - μ) / σ. By substituting the values into the formula, we can calculate the z score.
d) If we consider data speeds that convert to z scores between -2 and 2 to be neither significantly low nor significantly high, we can compare the z score calculated in part (c) with this range to determine if the carrier's highest data speed is significant. If the z score falls within the range of -2 to 2, it is not considered significantly low or significantly high.
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A ship’s sonar detects a submarine 880 feet below a point on the ocean’s surface 1450 ft dead ahead of the ship. To the nearest degree, find the angle x. A right triangle. Angle x is opposite to side with length 880 feet. Another side is 1450 feet. The hypotenuse is not labeled. A. 59º b. 37º c. 31º d. 53º.
The measure of the angle x is 59 degrees. Option A
How to determine the valuesThe different trigonometric identities are listed as;
sinecosinetangentcotangentsecantcosecantFrom the information given, we have that;
The measure of the adjacent is 880 feet
The opposite side is the ocean's surface = 1450 feet
The angle is x
Using the tangent identity, we have;
tan θ = opposite/adjacent
Now, we have to substitute the values, we get;
tan x = 1450/880
Divide the values, we get;
tan x = 1. 6477
Take the tangent inverse, we get;
x = 59 degrees
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We often read that iq scores for large population are centered at 100.What percent of these 78 students have scores above 100?
It is not possible to determine the percentage of students with scores above 100 without additional information, such as the mean and standard deviation of the IQ scores of the population.
To determine the percentage of students with scores above 100, we need to know the mean and standard deviation of the IQ scores of the population. IQ scores are standardized such that the average score is set to 100, with a standard deviation of 15. However, without information about the distribution of the scores, it is not possible to provide an accurate percentage.
Assuming the distribution of IQ scores follows a normal distribution, we can use a table or a statistical calculator to estimate the percentage. For example, if we know the mean and standard deviation of the IQ scores, we can calculate the z-score for an IQ score of 100. The z-score measures the number of standard deviations a particular score is away from the mean.
Once we have the z-score, we can consult a standard normal distribution table or use a statistical calculator to find the corresponding percentage of scores above the given z-score. This percentage represents the proportion of students with IQ scores above 100.
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Complete Question : we often read that iq scores for large populations are centered at 100. what percent of these 78 students have scores above 100? (round your answer to one decimal place.)
Write a simplified equivalent expression for the SUM. (5x – 2) + (2x + 9)
The simplified equivalent expression for the sum (5x – 2) + (2x + 9) is 7x + 7.
This can be obtained by combining like terms, which involves adding the coefficients of x and the constant terms separately.
In the given expression, we have (5x – 2) and (2x + 9). To simplify, we can add the coefficients of x together: 5x + 2x = 7x. Similarly, we can add the constant terms: -2 + 9 = 7. Therefore, the simplified expression becomes 7x + 7, where 7x represents the combined coefficient of x and 7 represents the combined constant term.
Overall, by combining like terms, we obtain the simplified equivalent expression of the sum (5x – 2) + (2x + 9) as 7x + 7.
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If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. X 4y = −9 2x 5y = −6 2x 5(4y − 9) = −6 2x 5(−4y − 9) = −6 2(4y − 9) 5y = −6 2(−4y − 9) 5y = −6.
The new equation obtained after substituting the expression equivalent to x from the first equation into the second equation is -18 - 13y = -6.
To solve the given system of equations using the substitution method, we need to substitute the expression equivalent to x from the first equation into the second equation.
To find the new equation, we can follow these steps:
Start with the first equation: x + 4y = -9.
Solve the first equation for x: x = -9 - 4y.
Substitute the expression (-9 - 4y) for x in the second equation: 2x - 5y = -6 becomes 2(-9 - 4y) - 5y = -6.
Simplify the equation by performing the multiplication: -18 - 8y - 5y = -6.
Combine like terms: -18 - 13y = -6.
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Refurbished phone 35% off
Now only £78
How much was the phone before the discounted price?
The original price of the refurbished phone before the 35% discount was £120. If a refurbished phone is sold at a 35% discount with a final price of £78.
To find the original price of a refurbished phone before the discount of 35%, let's use the following formula:
discount = original price - discounted price
35% of the original price can be represented as 0.35 times the original price. This will result in the equation below:
0.35x = original price - 78
Where x is the original price. So, to find the value of x, we can rearrange the equation to get:
0.35x + 78 = original price
Now we substitute the given values into the equation above:
0.35x + 78 = original price
0.35x + 78 = x - 44.1 (if x represents the original price)
Let's subtract 0.35x from both sides to isolate the x variable:
78 = 0.65x
Then, let's divide both sides by 0.65 to solve for x (the original price):
x = £120
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Ms. Seema’s annual salary is Rs 288000. Her annual savings is Rs 72000. The ratio of her annual spending to her annual saving is ____________ *
1 : 3
2 : 3
3 : 1
None of these
We have to find the ratio of Ms Seema's annual spending to her annual savings given that Ms. Seema's annual salary is Rs 288000 and her annual savings is Rs 72000.
The first step is to determine the annual spending of Ms. Seema.Subtracting the annual savings of Ms. Seema from her annual salary, we can determine her annual spending. Annual spending = Rs 288000 - Rs 72000 = Rs 216000We now know that Ms. Seema's annual spending is Rs 216000 per year and her annual savings is Rs 72000 per year.
We can now compute the ratio of her annual spending to her annual savings. Annual spending : Annual savings= 216000 : 72000= 3 : 1Therefore, the ratio of Ms. Seema's annual spending to her annual savings is 3 : 1. It implies that her annual spending is three times the annual savings.In conclusion, the ratio of Ms. Seema's annual spending to her annual savings is 3 : 1.
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The area of a rectangle is 400 square inches and its length is 4 times its width how many inches wide is the rectangle
The width of the rectangle is 10 inches, as it is calculated by finding the square root of the ratio of the area to the length.
Let's denote the width of the rectangle as "w" inches. According to the given information, the length of the rectangle is 4 times its width, so the length can be expressed as "4w" inches.
The formula for the area of a rectangle is length multiplied by width. In this case, the area is 400 square inches, so we have the equation:
Area = Length × Width
400 = (4w) × w
400 = 4w^2
To find the width, we can rearrange the equation and solve for "w":
4w^2 = 400
w^2 = 100
w = √100
w = 10
Therefore, the width of the rectangle is 10 inches. This means that the length of the rectangle is 4 times the width, which is 40 inches.
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