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4 years ago

WILL MAKE BRAINLIEST

1 answer:

3 0

If Hannah gives her younger sister 3 shirts, it does not matter what order she hands them to her. No matter the order, it will still be the same group of 3 shirt. Since order is not important this problem can be solved using a combination.
Specifically, we are asked to find 8C3 (sometimes called "8 choose 3"). This is a fraction. In the numerator, we start with 8 and count down 3 numbers. In the denominator, we start with 3 and count all the way down to 1.
your answer is 56

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What is the measure of angle x?

tiny-mole [99]

The answer would be 42 because its the same angle as the other one
I hope I helped! ♥

5 0

3 years ago

Read 2 more answers

A recent study of 26 city residents showed that the time they had lived at their present address has a mean of 10.3 years with t

svetlana [45]

Answer:

The 95% confidence interval is $9.15< \mu < 11.45$

Step-by-step explanation:

From the question we are told that

The sample size is n = 26

The mean is $\= x = 10.3$

The standard deviation is $s = 3$

From the question we are told the confidence level is 95% , hence the level of significance is

$\alpha = (100 - 95 ) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

=> $E = 1.96 * \frac{3}{\sqrt{26} }$

=> $E = 1.1532$

Generally 95% confidence interval is mathematically represented as

$\= x -E < \mu < \=x +E$

=> $10.3 -1.1532 < \mu < 10.3 + 1.1532$

=> $9.15< \mu < 11.45$

7 0

3 years ago

Kevin drove 871 miles in 13 hours. At the same rate, how many miles would he drive in 11 hours?

poizon [28]

Answer:

737 miles

Step-by-step explanation:

So we know that he drove 871 miles in 13 hours so first you want to do 871 divided by 13 and get 67 which means he drove 67 miles in one hour. Finally you just have to multiply 67 by 11 and get 737.

3 0

3 years ago

Read 2 more answers

1<br> For what value of x is the equation -3x + 7 = -17 true?

Kipish [7]

Answer:

-3x+7=-17 x=8

Step-by-step explanation:

-3*8+7=-17

6 0

4 years ago

Please find the square root of 64.

Alexeev081 [22]

You have r^2 = 64 and want to find the square root of 64, which we'll call r.

√(r^2) = r = plus or minus √64

or: r = plus or minus 8

7 0

3 years ago