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musickatia [10]

2 years ago

15

What is the solution to this equation?

1 answer:

Lemur [1.5K]2 years ago

7 0

Step-by-step explanation:

What is the solution to this equation?

(1/4)^x+1 =32

A.) -2

B.)7/-2

C.)2

D.) 3/2

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Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard d

Ostrovityanka [42]

The margin of error of the random selection is 0.29

The given parameters are:

$n = 320$ --- the sample size

$\sigma = 2.9$ --- the standard deviation

$\bar x = 24$ --- the mean

$\alpha = 90\%$ --- the confidence level.

The margin of error (E) is calculated as follows:

$E = z \times \sqrt{\frac{\sigma^2}{n}}$

So, we have:

$E = z \times \sqrt{\frac{3.2^2}{320}}$

$E = z \times \sqrt{\frac{10.24}{320}}$

The z-value for 90% confidence level is 1.645.

Substitute 1.645 for z

$E = 1.645 \times \sqrt{\frac{10.24}{320}}$

$E = 1.645 \times \sqrt{0.032}$

Take square roots

$E = 1.645 \times 0.1789$

Multiply

$E = 0.2943$

Approximate

$E = 0.29$

Hence, the margin of error is 0.29

Read more about margin of error at:

brainly.com/question/14396648

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Which table shows a proportional relationship between x and y?

Akimi4 [234]

Answer:

First one

Step-by-step explanation:

First choose because they are all multiply by 5

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2 years ago

Estimate the sum or difference 4/5+18/20 A 1 B 1 ,1/2 C 2

const2013 [10]

Answer:

C 2

Step-by-step explanation:

4/5+18/20=1.7

Round that up it’s 2

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2 years ago

If you follow me you get 10 points.

Bad White [126]

Answer:

OK!!!

Have a nice day!!!!

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If the points on a graph of a linear function are (-2,10 (0,4) (2,-2) and (4,8) what is the y-intercept

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Step-by-step explanation:

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