Answer:
Step-by-step explanation:
1. A
2. C
3. B
Which is the midpoint of segment AB with A(-1,5) and B(6,-3)
Answer:
(2½,1)
Step-by-step explanation:
(-1+6/2,5+-3/2)
(5/2,2/2)
(2½,1)
At a candy store, the price listed for 2 pounds of
chocolate is $9.95. What amount will Jerry need to pay,
if he decides to purchase 12 pounds of chocolate?
lbs
$
****
Submit
Answer:
Step-by-step explanation:
teaj
Chris deposits $6000 into an account that pays simple interest at a rate of 2% per year.
How much interest will he be paid in the first 3 years?
Answer:
$360
Step-by-step explanation:
You want the amount of simple interest earned by $6000 in 3 years at the rate of 2%.
InterestThe simple interest formula is ...
I = Prt
where P is the principal invested at rate r for t years.
Application$6000 invested at 2% for 3 years earns ...
I = $6000·0.02·3 = $360
Chris will be paid $360 in interest in the first 3 years.
boston thinks that the domain is all positive real numbers between 0-4 while caleb thinks it is all whole numbers between 0-4. who do you agree with, and why?
0-4 can be the domain of positive real numbers but can not be the domain of whole numbers.
Numbers an arithmetical value used in counting and calculating that is expressed as a word, symbol, or figure that represents a specific quantity.
Let's understand what is positive real numbers.
That is all the real numbers that are greater than or equal to zero.
real numbers are numbers which include both rational and irrational numbers.
whole numbers are positive integers that mean only positive integers.
that means 0-4 can be the domain of positive real numbers but can not be the domain of whole numbers because 0.5 and 0.6 these numbers are not whole numbers.
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Carson earns $113.75 for 7 hours of work. If he makes a constant hourly wage, which table represents the relationship between the number of hours he works and his total earnings?
The constant amount that Carson makes every hour is $16.25.
How to illustrate the relationship?It is important to note that this question has to do with a proportional relationship. Since Carson earns $113.75 for 7 hours of work and he makes a constant hourly wage.
The amount that he makes per hour will be:
= Amount / Number of hours
= $113.75 / 7
= $16.25
Therefore the constant amount he makes every hour is $16.25.
Note that the options weren't given but the question has been solved accordingly.
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Solve for y
-x - 2y ≥ 7
Answer: [tex]y \leq -\frac{x}{2}-\frac{7}{2}[/tex]
Step-by-step explanation:
[tex]-x-2y \geq 7\\\\x+2y \leq -7\\\\2y \leq -x-7\\\\y \leq -\frac{x}{2}-\frac{7}{2}[/tex]
I need help with these answeres. they are for geometry.
1) The two column proof for ΔLMN ≅ ΔLON is as developed below.
2) The two column proof for ΔGHJ ≅ ΔKLM is as developed below
How to carry out two column proof?A two-column proof is defined as a geometric proof that consists of a list of statements, and then the reasons that we know those statements are deemed to be true.
1) The two column proof showing that ΔLMN ≅ ΔLON is;
Statement 1: LN bisects ∠MLO and LM ≅ LO
Reason 1: Given
Statement 2: MN ≅ ON
Reason 2: Line segment bisector
Statement 3: ∠MLN ≅ ∠OLN
Reason 3: def. of angle bisector
Statement 4: LN ≅ LN
Reason 4: Reflexive property of congruence
Statement 5: ΔLMN ≅ ΔLON
Reason 5: SSS Congruency postulate
2) The two column proof is as follows;
Statement 1: ∠G ≅ ∠K, ∠J ≅ ∠M
Reason 1: Given
Statement 2: ∠H ≅ ∠L
Reason 2: 3rd angle theorem
Statement 4: ΔGHJ ≅ ΔKLM
Reason 4: ASA Congruency Postulate
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Solve for y in this diagram. Justify your answer.
The value of y in the given diagram is 6cm.
What is triangle?
Three edges and three vertices make up a triangle, which is a polygon. It is among the fundamental shapes in geometry. Triangle ABC refers to a triangle with the vertices A, B, and C.
In Euclidean geometry, any three points that are not collinear determine a singular triangle and a singular plane at the same time.
Consider, the given triangle the two base angles are same.
So, the triangle is a isosceles triangle.
Since, when the base angles of an isosceles triangle are equal, the sides that face these angles are also equal.
Hence, the value of y in the given diagram is 6cm.
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Solve. 3 x − 9 x 2 = − 10
Answer:
below
Step-by-step explanation:
9x^2-3x-10 = 0 Use quadratic Formula with a = 9 b = -3 and c = -10
to find the zeroes are x = 1/6 ± sqrt (41) / 6
PLEASE HELP ASAP FOR MY FINALS
Answer:
A.86
is the answer will show how it's solved if necessary on comment.
hope it helps!!!
show that 12cos30 + 2tan60 can be written in the form Vk where k is an integer
Answer:
√192
Step-by-step explanation:
12 cos 30° + 2 tan 60°
Substitute the trig functions of the special angles.
12 (½√3) + 2 (√3)
Simplify.
6√3 + 2√3
8√3
Move under the radical.
√(8² · 3)
√192
From a hot-air balloon, Justin measures a 34° angle of depression to a landmark
that's 1424 feet away, measuring horizontally. What's the balloon's vertical distance
above the ground? Round your answer to the nearest hundredth of a foot if necessary.
Answer:
960.50 feet
Step-by-step explanation:
You want to know the height of a balloon if it is 1424 feet horizontally from a landmark at an angle of depression of 34°.
TangentThe geometry of the problem can be modeled as a right triangle with a base angle of 34°, the adjacent leg 1424 feet, and the opposite leg being the height of the balloon. The tangent relation tells us ...
Tan = Opposite/Adjacent
Opposite = Adjacent·Tan
height = (1424 feet)·tan(34°) ≈ 960.50 feet
The balloon's vertical distance from the ground is 960.50 feet.
__
Additional comment
If the angle is measured to the nearest degree, then the height of the balloon is somewhere between 943 feet and 979 feet. The only purpose served by reporting the distance to the nearest 0.01 foot is to see if you can use your calculator correctly.
To make that precision for the height meaningful, the angle would need to be measured with an error less than 0.00014°, about 1/2 arc-second. This is better resolution than the best surveying instruments offer, by a factor of about 30.
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HELPPPP FASTER MARK BRAINLIEST IF CORRECT
A college is currently accepting students that are both in-state and out-of-state. They plan to accept four times as many in-state students as out-of-state, and they only have space to accept 100 out-of-state students. Let x = the number of out-of-state students and y = the number in-state students. Write the constraints to represent the incoming students at the college.
x > 0 and y > 0
0 < x ≤ 100 and 0 < y ≤ 400
0 < x ≤ 100 and y > 400
0 < x and y < 100
The constraints to represent the incoming students at the college is B. 0 < x ≤ 100 and 0 < y ≤ 400
How to illustrate the inequality?Inequalities are created through the connection of two expressions. It should be noted that the expressions in an inequality aren't always equal. Inequalities implies that the expressions are not equal. They are denoted by the symbols ≥ < > ≤.
In this situation, the college is currently accepting students that are both in-state and out-of-state. They plan to accept four times as many in-state students as out-of-state, and they only have space to accept 100 out-of-state students.
Let x = the number of out-of-state students and
y = the number in-state students.
The constraints is 0 < x ≤ 100 and 0 < y ≤ 400.The correct option is B.
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Complete these sentences by selecting the correct answers from the drop-down menus.
After one half-life,
% of the atoms will change to a stable isotope and
% will remain radioactive.
After three half-lives,
% of the atoms will change to a stable isotope and
% will remain radioactive.
Answer:
After one half-life,
50% of the atoms will change to a stable isotope and
50% will remain radioactive.
After three half-lives,
87.5% of the atoms will change to a stable isotope and
12.5% will remain radioactive.
Step-by-step explanation:
During the 1st half-life, 50% of the atoms change to a stable isotope, 50% radioactive left.
During the 2nd half-life, 50% of the left 50% radioactive change to a stable isotope, which is 25% of the total. 50% of 50% radioactive left, which is 25% of the total. Then 75% change to a stable isotope and
25% remain radioactive.
During the 3rd half-life, 50% of the left 25% radioactive change to a stable isotope, which is 12.5% of the total. 50% of 25% radioactive left, which is 12.5% of the total. Then 87.5% change to a stable isotope and
12.5% remain radioactive.
please show steps and how you got answer
The value of x and y at which function P = 3x+2y becomes maximum are
(9,0), data from given graph.
What is the graph?
Graph is the pictorial representation of given data.
Graph is defined as to create a diagram that shows a relationship between two or more things. An example of graph is to create a series of bars on graphing paper.
The four most common are
1. Probably line graphs,
2. Bar graphs and histograms,
3. Pie charts, and
4. Cartesian graphs
To find the maximum, input the vertices (0,8), (5,4) and (9,0) into the objective function (P = 3x + 2y) to determine which vertex obtains the maximum value.
Note: (5,4) is not a vertex.
(0,8) :
P = 3*0 + 2*8
= 16
(5,4):
P = 3*5 + 2*4
= 23
(9,0):
P = 3*9 + 2*0
= 27.
So, the maximum value = 27 at (9,0).
So, the x value = 9 and
the y value = 0.
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Point E has the same y-coordinate as point D, but the x-coordinate of point D. Plot point E and write the coordinates of point E. Then describe the type of reflection you plotted.
The coordinates of Point E are (-4,2) and Point E is a reflection of point D across the X-axis.
What is the coordinate about?Point E has the same y-coordinate as point D, which is 2. However, the x-coordinate of point E is the opposite of the x-coordinate of point D. The x-coordinate of point D is 4, so the x-coordinate of point E must be -4. Therefore, the coordinates of Point E are (-4,2).
As for the reflection, you can imagine a mirror placed on the x-axis (horizontally) and Point D and E being on the same side of that mirror.
Therefore, As Point D is reflected on the mirror, it will be flipped and the x-coordinate changes its sign and becomes -4. Therefore Point E is a reflection of point D across the X-axis.
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See full question below
Point E has the same y-coordinate as point D, but the x-coordinate of point E is the opposite of the x- coordinate of point D. Drag tiles to complete the statements. (4,2) (4,-2) (-4,2) (-4,-2) X-axis y-axis The coordinates of Point E are --- &Point E is a reflection of point D across the ---
What is right ?
please help!!!!
Answer: last option
Step-by-step explanation: every value can be divided by 21
Answer: D)
Step-by-step explanation: 21 x 6 = 126, 21 x 8 = 168, and 21 x 9 = 189
The statement for the expression 4x-10 is
Subtract 3
2y + 2xy – x + 4 from 9 - 7x + 3xy - 4
2y
STANDARD FORM MATHS HELP. POINTS
Answer:
1.64×10⁷ km16,400,000 km ("standard form" in the US)Step-by-step explanation:
You want the length of the hypotenuse of a right triangle with sides given as 3.6×10⁶ km and 1.6×10⁷ km.
Pythagorean theoremThe Pythagorean theorem tells you the relationship between the side lengths and the hypotenuse of a right triangle:
c² = a² +b²
RQ² = PQ² +PR²
RQ = √((3.6×10⁶)² +(1.6×10⁷)²) = 1.64×10⁷ . . . . . use numbers, take the root
The distance between planets Q and R is 1.64×10⁷ km.
__
Additional comment
The "standard form" of a number is different by location. In the US, it is written with the decimal point to the right of the units digit. In other places, "standard form" has the decimal point to the right of the most-significant digit, and a power of ten as a multiplier.
You may recognize the ratio of the given numbers is 9:40, telling you these lengths are a multiple of the {9, 40, 41} Pythagorean triple. That is, the distance RQ is 41/40 times the distance RP.
Any spreadsheet or scientific or graphing calculator can do the necessary arithmetic using the numbers in "scientific notation" format. Spreadsheets, in particular, use E() to signify ×10^(). That is, 3.6×10⁶ is entered into a spreadsheet as 3.6E6. The attached calculator display shows it can use the same sort of format.
Just use Pythagoras theorem to find the shortest distance between the two planets, (as it is along its hypotenuse)
The distance QR is :
[tex] \qquad \sf \rightarrow d = \sqrt{(1.6 \times 10 {}^{7}) {}^{2} + (3.6 \times 10 {}^{6} ) {}^{2} } [/tex]
[tex] \qquad \sf \rightarrow d = \sqrt{2.56 \times 10 {}^{14} + 12.96 \times 10 {}^{12} {}^{} } [/tex]
[tex] \qquad \sf \rightarrow d = \sqrt{256\times 10 {}^{12} + 12.96 \times 10 {}^{12} {}^{} } [/tex]
[tex] \qquad \sf \rightarrow d = \sqrt{(256 + 12.96 )\times 10 {}^{12} {}^{} } [/tex]
[tex] \qquad \sf \rightarrow d = \sqrt{(268.96 )\times 10 {}^{12} {}^{} } [/tex]
[tex]\qquad \sf \rightarrow d = 16.4\times 10 {}^{6} {}^{} [/tex]
A line has a slope of 2 and includes the points (
–
7,
–
10) and (0,j). What is the value of j?
Answer:
j = 4
Step-by-step explanation:
calculate the slope of the line passing through the goven points and equate to 2
calculate slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 7, - 10 ) and (x₂, y₂ ) = (0, j )
m = [tex]\frac{j-(-10)}{0-(-7)}[/tex] = [tex]\frac{j+10}{0+7}[/tex] = [tex]\frac{j+10}{7}[/tex] then equating gives
[tex]\frac{j+10}{7}[/tex] = 2 ( multiply both sides by 7 to clear the fraction )
j + 10 = 14 ( subtract 10 from both sides )
j = 4
. Solve for x: log₂ (x+4) + log₂ (x + 3) = 1. Pleasee
The value of x for the expression is equal to -5 and -2.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the logarithmic expression is log₂ (x+4) + log₂ (x + 3) = 1. The value of x will be calculated as,
log₂ (x+4) + log₂ (x + 3) = 1
log₂ { (x+4)(x + 3) } = 1
x² + 7x + 12 = 2
x²+ 7x + 10 = 0
Solve the above quadratic equation,
x²+ 7x + 10 = 0
x² + 5x + 2x + 10 =0
x ( x + 5 ) + 2 ( x + 5 ) = 0
(x + 5 ) ( x + 2 ) = 0
x = -5 and -2
The values of x are -5 and -2.
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△DEF is an isosceles triangle. If m∠D = (3x + 5)° , m∠E = (4x − 15)° and m∠F = (2x + 10)° , what is the measure of one of the congruent base angles?
The measure of one of the congruent base angles is 65°.
How to illustrate the triangle?It's important to note that any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane. In other words, there is only one plane that contains that triangle, and every triangle is contained in some plane. A triangle has three sides, three angles and the sum of the angles equal 180°.
It should be noted that a triangle has 3 side, 3 angles and a sum of 180°.
In this situation, DEF is an isosceles triangle. If m∠D = (3x + 5)° , m∠E = (4x − 15)° and m∠F = (2x + 10)°.
The value will be illustrated thus:
3x + 5 + 4x - 15 + 2x + 10 = 180
Collect the like terms
9x = 180 - 5 + 15 - 10
9x = 180
x = 180 / 9
x = 20
The measure of one of the congruent base angles will be:
= 4x - 15
= 4(20) - 15
= 65°
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I have this question can anyone solve
Answer:
-16Step-by-step explanation:
• 12a - 2b - 4b - 15a + 2 (a = 0, b = 3)
→ apply the values
• 12x0 - 2x3 - 4x3 - 15x0 + 2
• 0 - 6 -12 - 0 + 2
→ use BODMAS formulae
• 0 - 6 - 12 - 2
= 0 - 6 - 10
→ zero wouldn't be counted so
- 6 - 10
(-) + (-) = (+) so:
= -16
2. Which of the following expressions has a
constant term of 4?
a. 4x² + 4x
b. x² + 3x - 4
C. 2x²-x+4
d. 4x²+2x - 10
e. x+ 5x + 8
Answer:
C would be the answer
Step-by-step explanation:
constants are the numbers with no terms.
given that e1 and e2 have a high spearman correlation, what can we say about the pearson correlation of e1 and e2?
Given that e1 and e2 have a high spearman correlation, what we can say about the Pearson correlation of e1 and e2 is; The Pearson correlation must be high
How to Interpret Correlation Coefficient?A correlation coefficient is defined as the measurement of the extent to which two variables tend to change together.
Now, the Pearson correlation is the type that evaluates the linear relationship that exists between two continuous variables. A relationship is said to be linear as a result of a change in one variable being associated with a proportional change in the other variable.
Meanwhile, the spearman correlation is one that evaluates the monotonic relationship between two continuous or ordinal variables.
If the relationship described above tells us that one variable increases when the other increases, but then the amount is not consistent, then it means that the Pearson correlation coefficient is positive but less than +1. However, the Spearman coefficient still equals +1 in this case.
Thus, we conclude that as the spearman correlation is high, then the Pearson correlation is also high.
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19 points
Which relations represent a function?
The relation (10, 8), (7, 9), (9, 13), (8, 5) is representing a function. (option B)
What is a function?A function defines relations between input and output, where all input has a distinct output.
Given are the relations,
A) (14, 12), (10, 12), (-13, 7), (11, 15)
In this, two inputs 14 and 10 have same output 12, so it can not be a function.
B) (10, 8), (7, 9), (9, 13), (8,5)
In this, we can see, every input have distinct outputs, so it can be considered as a function.
Hence, (10, 8), (7, 9), (9, 13), (8,5) is a function.
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suppose that 3\%3%3, percent of over 200{,}000200,000200, comma, 000 books borrowed from a library in a year are downloaded. the librarians plan to take an srs of 757575 books from the population of borrowed books to see what proportion of books sampled are downloaded.what are the mean and standard de
In terms of the percentage of downloaded books, the sampling distribution's mean is 0.03 and its standard deviation is 0.0197.
Central Limit Theorem:
The sampling distribution of the sample percentage for a proportion p in a sample of size n will be roughly normal with a mean (μ = p) and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n} }[/tex].
In a given year, 3% of books checked out from the library are downloaded.
That means p = 0.03
and n = 75
By the Central Limit Theorem
Mean = μ = p = 0.03
Standard deviation = [tex]s = \sqrt{\frac{p(1-p)}{n} }[/tex]
[tex]s = \sqrt{\frac{(0.03)(0.97)}{75} }[/tex]
[tex]s=0.0197[/tex]
Hence,
In terms of the percentage of downloaded books, the sampling distribution's mean is 0.03 and its standard deviation is 0.0197.
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(50 points) Mariel and Sam Trent's savings account had a balance of $9,544 on May 1. The account earns interest at a rate of 5.25% compounded monthly until the end of August.
Answer:
$9,712.12 (nearest cent)
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Compound Interest Formula}\\\\$ A=P\left(1+\frac{r}{n}\right)^{nt}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\ \phantom{ww}$\bullet$ $P =$ principal amount \\ \phantom{ww}$\bullet$ $r =$ interest rate (in decimal form) \\ \phantom{ww}$\bullet$ $n =$ number of times interest is applied per year \\ \phantom{ww}$\bullet$ $t =$ time (in years) \\ \end{minipage}}[/tex]
Given:
P = $9,544r = 5.25% = 0.0525n = 12 (monthly)t = 4 months = 1/3 yearSubstitute the given values into the formula and solve for A:
[tex]\implies A=9544\left(1+\frac{0.0525}{12}\right)^{12 \cdot \frac{1}{3}}[/tex]
[tex]\implies A=9544\left(1.004375\right)^{4}[/tex]
[tex]\implies A=9544\left(1.017615179\right)[/tex]
[tex]\implies A=9712.119269[/tex]
The balance of the account at the end of August will be $9,712.12 (nearest cent).
A right triangle has a leg length of √ and a trypolenuse length of 7. Determine the length of the other leg of the right triangle.
03
O √59
O√43
The length of the other leg is (c) √43
How to determine the length of the other legFrom the question, we have the following parameters that can be used in our computation:
Hypotenuse = 7
One leg = √6
The length of the other leg can be calculated using
The length of the other leg = √(Hypotenuse^2 - One leg^2)
So, we have
The length of the other leg = √(7^2 - √6^2)
Evaluate
The length of the other leg = √43
Hence, the length is (c) √43
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Complete question
A right triangle has a leg length of √6 and a hypotenuse length of 7. Determine the length of the other leg of the right triangle.
Emma grew 6 plants with 3 seed packets. How many seed packets does Emma need to have a total of 16 plants in her backyard? Solve using unit rates.
Emma needs 8 seed packets to grow 16 plants.
What is unitary method?
The unitary approach is a strategy for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value. Finding the value of a single unit using the unitary technique, then extrapolating from this value.
Given that,
Emma grew 6 plants with 3 seed packets.
To grow 6 plants Emma needs 3 seed packets.
Applying unitary method:
To grow 1 plants Emma needs 3/6 seed packets.
To grow 16plants Emma needs (3 × 16)/6 seed packets.
= 8 seed packets.
The unitary method is used to unite rate.
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