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Lynna [10]
3 years ago
8

Pls help me solve this

Mathematics
1 answer:
sergejj [24]3 years ago
4 0

Answer:

you would multiply Length times width times height which is 3.5 times 4 times 6 and you will get your answer of 84 inches

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Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follow
guajiro [1.7K]

Answer:

a) x = 1.52

b) s = 1.16

Step-by-step explanation:

We have that:

5 students watched 0 movies.

9 students watched 1 movie.

5 students watched 2 movies.

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1 student watched 4 movies.

(a) Find the sample mean x.

Sum divided by the number of students. So

x = \frac{5*0 + 9*1 + 5*2 + 5*3 + 1*4}{5 + 9 + 5 + 5 + 1} = \frac{38}{25} = 1.52

(b) Find the approximate sample standard deviation, s.

Standard deviation of the sample.

Square root of the sum of the squares of the values subtracted from the mean, divided by the sample size subtracted by 1. So

s = \sqrt{\frac{5*(0-1.52)^2 + 9*(1-1.52)^2 + 5*(2-1.52)^2 + 5*(3-1.52)^2 + 1*(4-1.52)^2}{24}} = \sqrt{\frac{32.24}{24}} = 1.16

3 0
2 years ago
Judah deposited $450 into an account that earns simple interest, and after 4 years, the interest in the account was 90$. What wa
guapka [62]

Answer:

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Step-by-step explanation:

90/4 is 22.5 a year

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What is the expanded and word form for 67.943
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Word : Sixty-Seven and Nine Hundred Forty-Three Thousandths
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