The expression -7y is a
A term
B variable
C constant

Inequalities are expressions not separated by an equal sign. The solution of the compound inequality will be -6 < x < 24

Inequalities are expressions not separated by an equal sign.

Given the compound inequalities

X - 7 < 17 or -6x >36

For the inequality

x - 7 < 17

x < 17 + 7

x < 24

Similarly for -6x >36

x < -36/6
x < -6

The solution of the compound inequality will be -6 < x < 24

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Answer:

1/3÷5

=1/3×1/5

=1/15

each child receive 1/15 of cake

Answer:

maybe a that's my answer

Answer:

C.)

Step-by-step explanation:

that is exactly the definition of the derivative.

the derivative is the limit of

(f(x+h) - f(x))/((x+h) - x) = (f(x+h) - f(x))/h

with h going to 0.

this is the limit of the standard rate of change concentrated on a single point = the slope of the tangent at that point.

Answer:

\(n=(\frac{2.58(80)}{7})^2 =869.407 \approx 870\)

So the answer for this case would be n=870 rounded up to the nearest integer

Step-by-step explanation:

Information given

\(\sigma = 80\) represent the deviation

ME = 7 represent the margin of error

Solution

The margin of error is given by this formula:

\( ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}\)    (a)

And on this case we have that ME =7 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

\(n=(\frac{z_{\alpha/2} \sigma}{ME})^2\)   (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance level would be \( \alpha=0.01\) and \(\alpha/2 =0.05\). The critical value would be \(z_{\alpha/2}=2.58\), replacing into formula (b) we got:

\(n=(\frac{2.58(80)}{7})^2 =869.407 \approx 870\)

So the answer for this case would be n=870 rounded up to the nearest integer

Chay can use 3 bags of mulch per flower bed.

Chay is buying mulch for the zoo's summer flower beds. She has enough in her budget to purchase 55 bags of mulch. If there are 20 flower beds, how many bags of mulch can be used in each flower bed?The number of bags of mulch that can be used in each flower bed can be found by dividing the total number of bags of mulch by the number of flower beds, as given by the problem.Let X be the number of bags of mulch used in each flower bed. Then, the following equation can be written:Total number of bags of mulch = X × number of flower beds (20)Or, 55 = 20XDividing both sides of the equation by 20, we get: X = 55/20X = 2.75.Therefore, Chay can use 2.75 bags of mulch in each flower bed. However, since we cannot have a fraction of a bag of mulch, she would have to round up to 3 bags of mulch per flower bed to ensure each flower bed has enough mulch.

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Answer:

jk

Step-by-step explanation:

Answer:

D.  If you take a very large sample of the times Jackson tunes in to his favorite TV station, a commercial will be on about 35% of the time.

This is the right answer

Edge 2020

If you take a very large sample of the times Jackson tunes in to his favorite TV station, a commercial will be on  about \(35\%\) of the time.

Probability refers to the branch of mathematics regarding numerical descriptions of how likely an event is to occur. The probability of an event is a number between \(\boldsymbol{0}\) and \(\boldsymbol{1}\)

\(0\) indicates impossibility of the event and \(1\) indicates certainty.

If Jackson turns on his favorite TV station at a randomly selected time, the probability that the current show will be on is that ''If you take a very large sample of the times Jackson tunes in to his favorite TV station, a commercial will be on  about \(35\%\) of the time.''

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Answer:

Jennifer would complete the job on her own in 5 hours.

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

\(ax^{2} + bx + c, a\neq0\).

This polynomial has roots \(x_{1}, x_{2}\) such that \(ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})\), given by the following formulas:

\(x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}\)

\(x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}\)

\(\Delta = b^{2} - 4ac\)

Rates

The together rate is the sum of their separates rate.

We have that:

Jennifer takes x hours to complete the job on her own, so her rate is 1/x.

Carl needs 15 hours longer than Jennifer, that is, 15 + x hours, so his rate is 1/(15+x).

The together rate is 1/4. So

\(\frac{1}{4} = \frac{1}{x} + \frac{1}{15+x}\)

\(\frac{1}{4} = \frac{15 + x + x}{x(15+x)}\)

\(\frac{1}{4} = \frac{15 + 2x}{x(15+x)}\)

Applying cross multiplication.

\(x^2 + 15x = 4(15 + 2x)\)

\(x^2 + 15x = 60 + 8x\)

\(x^2 + 7x - 60 = 0\)

Quadratic equation with \(a = 1, b = 7, c = -60\). So

\(\Delta = 7^{2} - 4*1*60 = 289\)

\(x_{1} = \frac{-7 + \sqrt{289}}{2} = 5\)

\(x_{2} = \frac{-7 - \sqrt{289}}{2} = -12\)

Since the time to complete the job has to be a positive value.

Jennifer would complete the job on her own in 5 hours.

The length the line segment DF is 21 units

What is Similarity of Triangles?

Two objects are comparable in Euclidean geometry if they have the same form or one has the same shape as the mirror image of the other. More exactly, one can be created by evenly scaling the other, potentially with extra translation, rotation, and reflection.

Since, the question is incomplete I can only assume that the traingles are similar

So, by rule of similarity we can say that ED/BA = DF/AC

by this 15/5 = DF/7

This implies that the length of DF is 21 units

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Answer:

A

Step-by-step explanation:

A is the only graph with slope (1/4)

Answer:

62%

Step-by-step explanation:

31/50 is also equal to 62/100 (if we multiply the numerator and denominator by 2). 62/100 is 62%.

Answer:

62%

Step-by-step explanation:

31/50=0.62.

0.62 as a percent would be 62%

Answer:

no it is not. the line crosses the x in 20, and crosses the y in 40

Answer:

the answer is 105

Step-by-step explanation:

because 5×3=15 so 15×7 =105

Answer:

20

Step-by-step explanation:

good luck!!

Answer:

24 or 20

Step-by-step explanation:

Answer:

0.75 inches?

Step-by-step explanation:

I did it on the calculator:

3 divided by 4 = 0.75

The speed of the car is 0.8 miles per hour when the skid mark is 100 feet.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, The speed of a car in miles per hour is √(20)L, Where 'L' is the length in feet of its skid mark.

We know, 1 mile is equal to 5280 feet.

So, The speed of the car is √(20)×(L/5280) miles.

Therefore, The speed of the car when the skid mark is 100 feet is,

=  √(20)×(100/5280) miles.

= √20×0.019 miles.

= 0.8 miles per hour.

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Cheryl would need 240 tablespoons of cornstarch to make the green slime recipe 15 times.

The fundamental concept of repeatedly adding the same number is represented by the process of multiplication. The results of multiplying two or more numbers are known as the product of those numbers, and the components that are multiplied are referred to as the factors.

To make the green slime recipe 15 times, Cheryl would need 15 times the amount of cornstarch listed in the recipe.

If 1 cup of cornstarch is needed for one recipe, then 15 cups of cornstarch would be needed to make the recipe 15 times.

Since there are 16 tablespoons in 1 cup, the number of tablespoons of cornstarch needed to make the recipe 15 times is:

= 16 tablespoons/cup x 15 cups

= 240 tablespoons.

So, Cheryl would need 240 tablespoons of cornstarch to make the green slime recipe 15 times.

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The surface area of the right rectangular prism is given as follows:

358 m².

The surface area of a prism is obtained with the sum of the areas of each part of the prism.

The parts that compose the prism are given as follows:

The area of a rectangle is given by the multiplication of each of the dimensions of the rectangle.

Hence the surface area of the prism is calculated as follows:

S = 2 x (7 x 12 + 5 x 12 + 5 x 7) = 358 m².

(multiplication by two due to the two rectangles with each of the dimensions).

The prism is given by the image shown at the end of the answer.

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Answer:

5765 - 4567 = 1198

Answer for you second question:

Answer:

B

Step-by-step explanation:

The parenthesis will go away because there is nothing for them to be multipled by

Answer:

y= 3 y =0

Step-by-step explanation:

find the derivative

In linear equation, 3.99 does the amount of money left on the gift card change each month.

What in mathematics is a linear equation?

A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept. The variables in the previous sentence, y and x, are referred to as a "linear equation with two variables" at times.

                          Equations whose variables have a power of one are called linear equations. A single variable example with real values for a and b and x as the variable is ax+b = 0.

new difference = \(a_{m + 1} - a_{m}\) = answer

            let m = 1

  that's month 1 & 2

         50 - 3.99( m + 1) - (50 - 3.99(m))

         50 - 3.99 - 50

  hence  0 + 0 - 3.99

            = - 3.99

the amount of money left on the gift card change each month by  - 3.99

{that is it reduce by 3.99 }

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Answer:

The value is  \(p- value  = 0.041815\)

Step-by-step explanation:

From the question we are told that

  The  population mean is \(\mu  =  40 \ hours\)

  The  sample size is  \(n  =  18\)

    The  sample mean is  \(\= x =  37.8 \ hours\)

   The standard deviation is  \(\sigma  = 5.4\ hours\)

The null hypothesis is  \(H_o  :  \mu =  \ge 40\)

The alternative hypothesis is  \(H_a  :  \mu < 40 \ hour s\)

Generally the test statistic is mathematically evaluated as

       \(t=  \frac{\= x - \mu}{ \frac{\sigma}{ \sqrt{n} } }\)

      \(t=  \frac{37.8 - 40}{ \frac{5.4}{ \sqrt{18 } }\)

      \(t=  -1.73\)

From the z - table the p-value is obtained and the value is  

      \(p- value  =  P(Z <  -1.73)\)

        \(p- value  = 0.041815\)

To test DullCo's hypothesis, the p-value is 0.041815 and this can be determined by using the given data.

Given :

The following steps can be used in order to determine the p-value for DullCo's hypothesis:

Step 1 - The formula for t-statistics can be used in order to determine the p-value for DullCo's hypothesis.

Step 2 - The formula for t-statistics is given below:

\(t = \dfrac{\bar{x}-\mu}{\dfrac{\sigma}{\sqrt{n} }}\)

where the sample size is 'n', the standard deviation is \(\sigma\), and the mean is \(\mu\).

Step 3 - Now, substitute the values of \(\sigma\), \(\mu\), \(\bar{x}\), and n in the above formula.

\(t = \dfrac{37.8-40}{\dfrac{5.4}{\sqrt{18} }}\)

Step 4 - SImplify the above expression.

\(t = \dfrac{-2.2}{1.2727}\)

\(t = -1.73\)

Step 5 - Now, with the help of the z-table the p-value is:

\(\rm p-value = P(Z<-1.73)\)

\(\rm p-value = 0.041815\)

To test DullCo's hypothesis, the p-value is 0.041815.

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Answer:

(-3,-35), and the slope is -8/1

Step-by-step explanation:

If you're trying to find the other endpoint, that's it, and the slope is -8/1

Answer:

1 in

Step-by-step explanation:

We are given that

Height of tree in original  drawing=12 in

Julie's drawing tree height=1/4 of original size

Sahil's drawing tree height=1/3 of original size

We have to find the difference between the height of the tree in Julie's and Sahil's drawings.

Height of tree in Julie's drawing=\(\frac{1}{4}\times 12\)in

Height of tree in Julie's drawing=3 in

Height of tree in Sahil's drawing=\(\frac{1}{3}\times 12\)in

Height of tree in Sahil's drawing=4 in

Difference between the height of the tree in Julie's and Sahil's drawings=4 in-3in

Difference between the height of the tree in Julie's and Sahil's drawings=1 in