4 years ago

PLEASE HELP ME!

Mathematics

2 answers:

deff fn [24]4 years ago

6 0

Answer:12

Step-by-step explanation:

Alchen [17]4 years ago

5 0

Answer:

Step-by-step explanation:

I took the test.

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Assume that the heights of men are normally distributed. a random sample of 16 men have a mean height of 67.5 inches and a stand

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Solution: The 99% confidence interval for the population standard deviation is given below:

$\sqrt{\frac{(n-1)s^{2}}{chi^{2}_{\frac{\alpha}{2}}}} \leq$ σ $\leq \sqrt{\frac{(n-1)s^{2}}{chi^{2}_{1-\frac{\alpha}{2}}}}$

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$2.2\leq$ σ $\leq 5.8$

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Lapatulllka [165]

I’m pretty sure it’s the 3rd one

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Brut [27]

$x=213$

For first six weeks she saved 213$

Now

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3 years ago

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Let f(x) = 2x - 6 Solve f-1(x) when x = 2.

NISA [10]

This is an inverse function, so first we have to flip x and y:

y = 2x - 6
x = 2y - 6

Now, let’s substitute 2 into the equation:

2 = 2y - 6

Solve:

8 = 2y
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Hope this helped!

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3 years ago

What is the length of the hypotenuse?

gayaneshka [121]

Answer:

Hello! answer: 5

Step-by-step explanation:

What you do to find the answer for these is do a^2+b^2=c^2 Basically meaning 4 × 4 + 3 × 3 will equal a number that you then find the suare root of square root just meaning a number multiplied by itself to equals that number so...

4 × 4 = 16

3 × 3 = 9

16 + 9 = 25

√25 = 5

5 × 5 = 25 therefore c = 5 hope that helps!

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3 years ago