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3 years ago

What is the slope of the line that passes through the points (-4,-4) and (9,4)

Mathematics

1 answer:

aleksandrvk [35]3 years ago

6 0

Answer:

4-(-4)/9-(-4)

slope=8/13

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Run

Morgarella [4.7K]

what a question do u have

3 0

3 years ago

Describe the main parts of a proof

uysha [10]

Show how you got your answer in reverse. For example... if ur question is
4+4/(?)=4
8/?=4
oh its commen sense that the answer is 2.
now show how u got the answer 2.

? is 2 because, 4 times 2 equals 8
4(2)=8

6 0

3 years ago

The manufacturing of a ball bearing is normally distributed with a mean diameter of 22 millimeters and a standard deviation of .

Misha Larkins [42]

Answer:

0.1507 or 15.07%.

Step-by-step explanation:

We have been given that the manufacturing of a ball bearing is normally distributed with a mean diameter of 22 millimeters and a standard deviation of .016 millimeters. To be acceptable the diameter needs to be between 21.97 and 22.03 millimeters.

First of all, we will find z-scores for data points using z-score formula.

$z=\frac{x-\mu}{\sigma}$ , where,

z = z-score,

x = Sample score,

$\mu$ = Mean,

$\sigma$ = Standard deviation.

$z=\frac{21.97-22}{0.016}$

$z=\frac{-0.03}{0.016}$

$z=-0.1875$

Let us find z-score of data point 22.03.

$z=\frac{22.03-22}{0.016}$

$z=\frac{0.03}{0.016}$

$z=0.1875$

Using probability formula $P(a$ , we will get:

$P(-0.1875$

Therefore, the probability that a randomly selected ball bearing will be acceptable is 0.1507 or 15.07%.

6 0

4 years ago

HELP!!!!!!!!!!!

liraira [26]

<span>A.The distributions are somewhat similar.

B.The means-to-MAD ratio is 4.

C.The distributions are different.

D.The means-to-MAD ratio is 3.

To get your answer </span>add all them together divide by 8.1 then multiply it to the second power.

8 0

3 years ago

A marathon is 26.2 miles long. There is a water station every 114 miles along the race route. How many water stations are needed

Aleks [24]

Answer:

I think 21

Step-by-step explanation:

7 0

3 years ago