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2 years ago

13

Eva earns $16 for walking dogs for 4 hours. If eva charges at the same rate, how many hours will it take her to earn $32

2 answers:

earnstyle [38]2 years ago

7 0

Answer:

8 hours because 4 times 8 is 32

Step-by-step explanation:

loris [4]2 years ago

7 0

Answer:

8 hours

Step-by-step explanation:

Eva earns $16 dollars for every 4 hours of dog walking. We already know that half of 32 is 16, so we know that Eva just needs 16 more dollars to get to $32. If she makes $16 every 4 hours, and needs to make $16 more, she needs to work another 4 hours.

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Take the number you are given, double the difference between your number and 5, add four, divide by 2. If the first number is 12

ANTONII [103]

Answer:

3

Step-by-step explanation:

Here's the rundown of values:

12=9

9=6

6=3

3rd value=3

*The values are created through going through the numerical process.

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2 years ago

I know only one answer whats the other one help me image-

miv72 [106K]

Answer:

A. 4(4a + 18)

B. 8(2a + 9)

Step-by-step explanation:

<u><em>We know that</em></u> :

16a = 4×4×a

72 = 4×18

Then

16a + 72 = 4×(4a) + 4×(18)

= 4 × (4a + 18)

On the other hand,

16a = 8×2×a

72 = 8×9

Then

16a + 72 = 8×(2a) + 8×(9)

= 8 × (2a + 9)

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1 year ago

What is the Surface area for a rectangular prism that has the measurements of 2, 12, and 6?

Bond [772]

Answer:

216

Step-by-step explanation:

A=2(wl+hl+hw)=2·(12·2+6·2+6·12)=216

5 0

2 years ago

Read 2 more answers

Iel travels 400 miles in 8 hours. What is her rate of change or speed? A) 40 miles per hour B) 50 miles per hour C) 55 miles per

kupik [55]

The speed is 400/8=50mph

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2 years ago

A consumer affairs investigator records the repair cost for 4 randomly selected washers. A sample mean of $64.26 and standard de

Mashutka [201]

Answer:

Critical value: z = 1.28

The 80% confidence interval for the mean repair cost for the washers is between $46.487 and $82.033.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.80}{2} = 0.10$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$

So it is z with a pvalue of 1-0.1 = 0.9, so z = 1.28

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

So

$M = 1.28*\frac{27.77}{\sqrt{4}} = 17.773$

The lower end of the interval is the mean subtracted by M. So 64.26 - 17.773 = $46.487.

The upper end of the interval is M added to the mean. So 64.26 + 17.773 = $82.033.

The 80% confidence interval for the mean repair cost for the washers is between $46.487 and $82.033.

7 0

2 years ago