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3 years ago

10

The dimensions of the right triangle shown below are given in feet. What is the length of the hypotenuse of the triangle, in fee

t?
v

1 answer:

frutty [35]3 years ago

3 0

Answer:

C) square root of 65

Step-by-step explanation:

4^2+7^2=hypotenuse^2

16+49=hypotenuse^2

65=hypotenuse^2

hypotenuse=square root of 65

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One sample has Aa Aa One sample has n 10 scores and a variance of s2 20, and a second sample has n 15 scores and a variance of s

siniylev [52]

Answer:

option (a) It will be closer to 30 than to 20

Step-by-step explanation:

Data provided in the question:

For sample 1:

n₁ = 10

variance, s₁² = 20

For sample 2:

n₂ = 15

variance, s₂² = 30

Now,

The pooled variance is calculated using the formula,

$S^{2}_{p} = \frac{(n_{1}-1)\times s^{2}_{1} +(n_{2}-1)\times s^{2}_{2}}{n_{1}+n_{2}-2}$

on substituting the given respective values, we get

$S^{2}_{p} = \frac{(10-1)\times 20 +(15-1)\times 30}{10+15-2}$

or

$S^{2}_{p}$ = 26.0869

Hence,

the pooled variance will be closer to 30 than to 20

Therefore,

The correct answer is option (a) It will be closer to 30 than to 20

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3 years ago

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Rainbow [258]

The answer is B 21.53

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3 years ago

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Given the graph, which coordinate point is NOT a solution?

Natasha2012 [34]

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