help me please...step by step pleaseeeee

Answer:

[tex]B = 4x + 8[/tex]

A box = $11

Step-by-step explanation:

Given

[tex]Total = 7x + 13[/tex]

Represent the first order with A and the second with B.

So, we have:

[tex]A = 3x + 5[/tex]

Solving (a): Find B.

To find B, we make use of:

[tex]A + B = Total[/tex]

Make B the subject

[tex]B = Total - A[/tex]

Substitute values for Total and A

[tex]B = 7x + 13 - (3x + 5)[/tex]

Open bracket

[tex]B = 7x + 13 - 3x - 5[/tex]

Collect Like Terms

[tex]B = 7x - 3x + 13 - 5[/tex]

[tex]B = 4x + 8[/tex]

Solving (b): Cost of a box of light bulb

This means that:

[tex]Total = 90[/tex]

Substitute 7x + 13 for Total

[tex]7x + 13 = 90[/tex]

Collect Like Terms

[tex]7x = 90 - 13[/tex]

[tex]7x = 77[/tex]

Make x the subject

[tex]x = \frac{77}{7}[/tex]

[tex]x = 11[/tex]

Answer:

left top: 37

right top: 8

left bottom: 14

right bottom: 6

Step-by-step explanation:

i need a brainliest and i hope this helps!

Answer:

x=1 and y=-5

Step-by-step explanation:

i think that is right

Answer:

B. (2,1)

Step-by-step explanation:

Substitute the first value from the parentheses for x, and the second value for y in the equation.

Calculate.

If the answer is true, the point is a solution on the line.

3(2) -5(1) = 1

6 –5 = 1

1 = 1. True. point B is a solution on the line.

D* for example:

3(2) -5(3) = 1

6 - 15 = 1

–9 = 1 False. This is not a solution on the line.

You get the idea. The others are also false.

Answer:

Product B performed worse

Step-by-step explanation:

71% experienced relief with Product A

31/50, which is 62%, got relief with Product B

Answer:

The function that can be used in the online shopping club about its monthly revenue is:

[tex]R = -400x^{2} +7200x+70000[/tex]

Step-by-step explanation:

First, we're gonna take into account the different values we have in the exercise:

How the variable [tex]x[/tex] represents the price increase, we can do the formula below:

In this formula, we represent in the first part that by each 1 in the variable [tex]x[/tex], the total of members will be reduced in 400, in the second part, we mention that at the same time, the membership fee will be increased in the same value of [tex]x[/tex]. Now we must simplify this function:

We operate the values:

Solve we can:

And organize:

At the end, how [tex]R[/tex] represents the monthly revenue received by the club, we use that variable for our formula:

Answer:

75% and .75

Step-by-step explanation:

Answer:

C) -4   1

   -2   -7

Step-by-step explanation:

I got it right on Edge 2021

The value of x in expression is,

⇒ x = [- 4, 1, - 2, - 7]

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

Given that;

The expression is,

[-1, -2, 4, 8] + x = [-5,- 1, 2, 1]

Now, We can simplify as;

x = [- 5, - 1, 2, 1] - [ - 1, - 2, 4, 8]

x = [- 4, 1, - 2, - 7]

Thus, The value of x in expression is,

⇒ x = [- 4, 1, - 2, - 7]

Learn more about the subtraction visit:

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Complete question :

Sam knows that his MP3 player has 40% of its battery life left and that the battery

charges by an additional 12 percentage points every 15 minutes. What percent of

the mp3's battery will be charged when Sam and his family leave? If mp3 was plugged in an hour before his family plan to leave.

Answer:

88%

Step-by-step explanation:

Time before leaving = 1hour

Current percentage = 40%

Charge rate = 12% every 15 minutes

Therefore,

Charge rate per minute :

12% / 15 = 0.8% per minute

Charge recieved after one hour (60 minutes) :

0.8% * 60

= 48%

Therefore, total charge after just before leaving is:

Current percentage + percentage received

40% + 48%

= 88%

Answer:

More customers who returned to the store were "Offered a Coupon"

More customers who did not return to the store were "not offered a coupon"

There "does" appear to be an association between whether a customer received a coupon and the customer’s tendency to return to the store to shop again.

Hope this helps buddy!

Step-by-step explanation:

Answer:

1.offered coupon

2.not offered a coupon

3. does

Answer: a # less i beleavie...

adjective. innumerable; countless; myriad. without anumber

Answer:

1.12 × 10^-3

Step-by-step explanation:

The computation of the width of the photograph is as follows:

As we know that

Area of the rectangle = length × width

33 ÷ 20 square inches = 1475 inches × width

So, the width is

= Length ÷ area

=  1475 inches ÷ (33 ÷ 20 square inches)

= 1.12 × 10^-3

Answer:

2

Step-by-step explanation:

you just multiply

Answer:

its C. all of the sea urchin in the entire ovean is the most likely to be the population of interest

The population of interest will most likely be option B. all of the sea urchins near the plant.

The term 'population of interest' refers to the group or number from which inference is made or done for research purposes. And from this group, the researcher will try to draw conclusions from his/her study.

For the marine biologists to determine the extent of the factory's effect on the sea urchins, they would consider or take the sea urchins near the factory population as the population of interest. Thus, the correct answer is option B.

Learn more about population of interest here:

brainly.com/question/16976252

Answer:

it is 8 i had the same question

Step-by-step explanation:

Answer:

answer is 8

Step-by-step explanation:

Answer:

8/9

Step-by-step explanation:

Find the HCF of 64 , 72

64  = 2 * 2 * 2 * 2 * 2 *2 = 2^6

72 = 2 * 2 * 2 * 3 * 3

HCF = 2*2*2 = 8

64 : 72 = [tex]\frac{64}{72}[/tex]

            = 64 ÷ 8

               72 ÷ 8

           [tex]=\frac{8}{9}[/tex]

Answer:

y-intercept = -2

x-intercept = 8

Step-by-step explanation:

[tex]x - 4y = 8\\x = 0 => y = -2\\y=0 => x = 8[/tex]

Answer:

Answer:

40

Step-by-step explanation:

4+5=9

9x(10/9)=10

10x4=40

Answer:they sold 126 bats

Step-by-step explanation:

30/100= 3/10

3/10x420=3x42=126

Answer:

78

Step-by-step explanation:

Hope this helped. Pls mark brainliest

Answer:

78

Step-by-step explanation:

3(9+13+4)

9+13+4 = 26

3(26) = 78

Answer:

=2/3

Step-by-step explanation:

Answer:

Number 2: I believe an 85

Number 4: The answer is 20 days.

Step-by-step explanation:

Answer:

3.5?

Step-by-step explanation:

The best estimate for the rate of change of the voltage over the interval will be 3.5 volts. Then the correct option is B.

It is the average amount by which the function is modified per unit throughout that time period. It is calculated using the gradient of the line linking the interval's ends on the graph that represents the function. The average rate of change of the function is given as,

Average rate = [f(x₂) - f(x₁)] / [x₂ - x₁]

The graph shows the voltage in a circuit changing as temperature increases from 100° to 600°.

We know that v = 1750 at t = 600° and v = 0 at t = 100°. Then the Average rate of change is given as,

Average rate = (1750 - 0) / (600 - 100)

Average rate = 1750 / 500

Average rate = 3.5

The best estimate for the rate of change of the voltage over the interval will be 3.5 volts. Then the correct option is B.

More about the average rate change of a function link is given below.

https://brainly.com/question/23715190

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Answer:

E  on Edge

Step-by-step explanation:

Answer:

That would be 4 minutes

Step-by-step explanation:

Think of 10 as 100%

1 would be 10

2 would be 20

3 would be 30

And so on and so forth

Hope this helps (:

Answer:

it is 25 40% of 10 is 25

Step-by-step explanation:

you do 10/40%=25.

pls give me brainlyest pls need it