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Alecsey [184]
3 years ago
8

The table shows the cost of Girl Scout cookies in order to continue the proportional relationship how much would 5 boxes of cook

ies cost

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
3 0

Answer:18.75

Step-by-step explanation: each cookie costs 3.75 so 3.75 times 7= 18.75

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Suzie is generating an expression equivalent to 3x-4+5(6x-8). Her work is shown below.
gizmo_the_mogwai [7]
  • 1. B. Step 2 has an error. Instead of adding 3x and 30x, Suzie has subtracted 3x from 30x. And also, she has not added -4 and -40. The correct step will be 33x - 44.
  • 2. A. 11(3x - 4).The next step will be 11(3x - 4).

<u>Answers:</u>

  1. <u>B.</u><u> </u><u>Step </u><u>2</u>
  2. <u>A.</u><u> </u><u>1</u><u>1</u><u>(</u><u>3</u><u>x</u><u> </u><u>-</u><u> </u><u>4</u><u>)</u>

Hope you could understand.

If you have any query, feel free to ask.

7 0
2 years ago
If the standard deviation of a normally distributed population is 22.0 and we take a sample of size 4 then the standard error is
lawyer [7]

Answer:

The standard error is 11.

Step-by-step explanation:

Given : If the standard deviation of a normally distributed population is 22.0 and we take a sample of size 4.

To find : The standard error ?

Solution :

The standard error formula is

SE=\frac{\sigma}{\sqrt{n}}

Where, \sigma=22 is the standard deviation of a normally distributed population

n=4 is the sample size

Substitute the value,

SE=\frac{22}{\sqrt{4}}

SE=\frac{22}{2}

SE=11

Therefore, the standard error is 11.

7 0
3 years ago
Khan uses 78ft of fence for a pen and the length is 25ft. What is the width
mariarad [96]

Answer:

The width is 14ft

Step-by-step explanation:

Given

Fence = 78

Length = 25

Required

Determine the width

To do this, we assume that the fence is a rectangle

So, we use the following formula.

Perimeter = 2 * [Length + Width}

Where:

Perimeter  = Fence = 78

So, we have:

78= 2 * [25 + Width}

Divide both sides by 2

39= 25 + Width

Solve for Width

Width = 39 - 25

Width = 14

7 0
3 years ago
Kristen gets home from work at 5:34 p.m. Kristen's dinner is ready at 5:51 p.m.
bazaltina [42]

Answer:

1,020 seconds

Step-by-step explanation:

we know that

To find out how many seconds after Kristen gets home is her dinner ready, subtract the time Kristen gets home from the time Kristen's dinner is ready

so

5:51 p.m-5:34 p.m=17 min

Remember that

1\ min=60\ sec

Convert minutes to seconds

17\ min=17(60)=1,020\ sec

7 0
4 years ago
If AB=7x, CB=5x+8 and BD AC what is the length of CB
seropon [69]

Answer:

x = 4

CB = 28

Step-by-step explanation:

In triangle ABC,

AB = CB..... (given)

Therefore,

7x = 5x + 8

7x - 5x = 8

2x = 8

x = 8/2

x = 4

CB = 5x + 8 = 5*4 + 8 = 20 + 8 = 28

8 0
3 years ago
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