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3 years ago

Two skaters start at the same point and travel in opposite directions. One skater travels 4 mi/hr slower

Mathematics

1 answer:

rodikova [14]3 years ago

5 0

Answer:

The faster skater is going 44mi/hr and the slower skater is going 40i/hr.

Step-by-step explanation:

132 divided by 3 is 44 thats the first skater. Then you do 44 minus 4 because he was 4mi/hr slower and you get 40.

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Solve for -5/6*n=40<br><br> 56<br><br> 48<br><br> -48<br><br> -56

oee [108]

Solve for -5/6*n=40

n = 40/(-5/6)

n = 40 * -6/5

n = -48

answer n= -48

5 0

3 years ago

What is the value of x?<br> Enter your answer in the box.

loris [4]

Answer:

Step-by-step explanation:

Since all the angles are the same in this triangle, all the sides should be the same too.

Hence, 3x - 5 = 4x - 30

5 + -1x = -30

-1x = -35

x = 35

Hope this helped!

8 0

3 years ago

Read 2 more answers

Use the numbers from 1 to 9 to fill in the blanks to get the smallest possible answer.

Sloan [31]

Answer: first blank: 1

second blank: 9

third blank: -7

fourth blank: 2

1x-9=-7

x=2

4 0

3 years ago

a study of nickels showed that the standard deviation of the weight of nickels is 300 milligrams. A coin counter manufacture wis

cupoosta [38]

Using the z-distribution, a sample of 609 nickels has to be weighed.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

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

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$M = 20, \sigma = 300, z = 1.645$

We solve for n to find the sample size, then:

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

$20 = 1.645\frac{300}{\sqrt{n}}$

$20\sqrt{n} = 1.645 \times 300$

$\sqrt{n} = 1.645 \times 15$

$(\sqrt{n})^2 = (1.645 \times 15)^2$

n = 608.9

Rounding up, a sample of 609 nickels has to be weighed.

More can be learned about the z-distribution at brainly.com/question/25890103

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6 0

2 years ago

In time what is 6:40 + 3:50 = ??

levacccp [35]

Answer:

10:30

Step-by-step explanation:

10:30 if you do the math

5 0

3 years ago

Read 2 more answers