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Sergeu [11.5K]
2 years ago
12

What is the length of ab

Mathematics
1 answer:
Strike441 [17]2 years ago
4 0
It is 56 times 343 yeah
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Which equation applies the associative property of multiplication?
Radda [10]

-5/12 x (6/5 x 1/3) x 9/2 = (-5/12 x 6/5) x (1/3 x 9/2) as said equation correlates with the following formula: (a x b) x c = a x (b x c) where the way you group three or more numbers when adding or multiplying does not change their overall sum or product. Hope this helped! :)

5 0
2 years ago
Read 2 more answers
A statistics student would like to estimate the average age of students at her college. she would like to be 85% confident that
Anna11 [10]

A statistics student would like to estimate the average age of students at her college. she would like to be 85% confident that her estimate includes the actual college population mean

It means confidence level is 0.85.

After taking survey the estimate of population standard deviation is found as 4.5 years. The given margin of error is 0.5 years

The sample size is obtained using formula

n= (\frac{z_{\alpha/2} std}{ME} )^{2}

Where std = standard deviation

alpha = 1 -c = 1-0.85 = 0.15

z(α/2) = z(0.15/2) = z(0.075)

It is the critical value of z such that area above z and below -z is 0.075

Use z score table to find the probability exactly or very close to 0.075 and note the corresponding z score value.

In z score table there is no accurate 0.075 probability value. The close value is 0.0749 which corresponds to z score -1.44

For calculation we take positive z score value.

So we get z(α/2) =1.44

Using all the given values into formula

n = [(1.44 * 4.5) / 0.5]^2

n = 167.96

Rounding it to nearest integer we get n=168

The number of people need to surveyed is n=168

7 0
2 years ago
What is the sum of the first five prime numbers?
Harrizon [31]

Answer:

I believe the answer is 28

8 0
3 years ago
1. Mrs. Zappia has 24 Jolly Ranchers and 42 Tootsie Rolls. She wants to put
Marizza181 [45]

Answer:

21 bags. 1 Jolly rancher in each bag and 2 tootsie rolls on each bag.

5 0
3 years ago
Make l the subject of the formula
AlexFokin [52]
F=EA(e/l)
e/l=EA/F
l=Fe/EA
8 0
3 years ago
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