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Setler [38]
2 years ago
9

Brainliest if correct

Mathematics
2 answers:
marysya [2.9K]2 years ago
8 0

Answer:

w=4

Step-by-step explanation:

28=14w-7w whenever you work it out it equals w=4... happy to help :)

sineoko [7]2 years ago
8 0

Answer:

w = 4

Step-by-step explanation:

Rewrite the equation as 14w - 7w = 28

Now subtract 7w from 14w

7w = 28

Divide

7w/7 = 28/7

28/7 = 4 > w = 4

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The scores of 1000 students on a standardized test are normally distributed with a mean of 50 and a standard deviation of 5. wha
ra1l [238]
We are looking to find P(X>60 students)

X is normally distributed with mean 50 and standard deviation 5

We need to find the z-score of 60 students 
Z= \frac{60-50}{5}=2

To find the probability of P(Z>2), we can do 1 - P(Z<2)
So we read the probability when Z<2 which is 0.9772, then subtract from one we get 0.0228

The number of students that has score more than 60 is 0.0228 x 1000 = 228 students
3 0
3 years ago
I dont need it anymore
vova2212 [387]

Answer:

I'm sorry but what is the question?

Step-by-step explanation:

8 0
3 years ago
An advertisement for a circular rug says that the rug has a diameter of 6 feet. Find the relative error of this measurement
Aleonysh [2.5K]

Answer:

1. 8.3%

Step-by-step explanation:

Relative error = absolute error/expected measurement

The expected measurement is given as 6 ft.

Now, the absolute error is usually equal to half of a unit of the measure.

This means the absolute error in this case is ½ × 1 = 0.5 ft

Thus, the exact measurement will be;

6 ± 0.5

Thus;

Relative error = 0.5/6

Relative error = 0.083

Expressing it in percentage gives 8.3%

4 0
3 years ago
If the length of a rectangle is 4.3 feet and its width is 2.7 feet what is its are and its perimeter
Dvinal [7]
The area is 11.61 square feet and the perimeter is 14 feet. i hope this helps :)

Area=Length times width

Perimeter=Length+Length+width+width
7 0
3 years ago
Read 2 more answers
What is the correct answer? Please help urgent thank you
notka56 [123]

Answer:

AAS

Step-by-step explanation:


8 0
3 years ago
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