How is 3072 written in expanded form??

Answers

Answer 1

Answer: 3000 + 70 + 2

It's basically everything that is added to get that number. You do not need a 100's place because a 0 is holding that spot.

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How are the two angles below related. Drawing not to scale. 45 degrees and 135 degrees

Answers

Answer:

The answer to your question is A. supplementary

The two angles, of 45 and 135 degrees respectively, are related because they are supplementary — this means their total sum adds up to 180 degrees. Complementary angles have a sum of 90 degrees.

What is 5 to the power of negative two

Answers

the answer is 3 best negative two is -2 so u have 5 - 2 and 3 is your answer

simplify the expression.Exact Form:125/125Decimal Form:0.04

What is the point-slope form of an equation with the slope of 3/5 that passes through the point (10, –2)?

Answers

Hello,

y+2=3/5(x-10)

or
y=3/5 x -8

In a sample of 50 households, the mean number of hours spent on social networking sites during the month of January was 45 hours. In a much larger study, the standard deviation was determined to be 8 hours. Assume the population standard deviation is the same. Which of the statement below best describes that there is a 95% confidence interval for the mean hours devoted to social networking in January? A. The 95% confidence interval ranges from 8 to 45 hours. B. The 95% confidence interval ranges from 40.13 to 45.78 hours. C. The 95% confidence interval ranges from 43.87 to 46.13 hours. D. The 95% confidence interval ranges from 42.78 to 47.22 hours.

Answers

Answer:

D. The 95% confidence interval ranges from 42.78 to 47.22 hours.

Step-by-step explanation:

Here,

n = sample size = 50,

μ = mean = 45,

σ = standard deviation = 8,

We know that, confidence interval will be,

$=\mu\ \pm\ z(\sigma )/(√(n))$

For a confidence interval of 95%, we use z = 1.96, putting the values

$=45\ \pm\ 1.96(8)/(√(50))$

$=42.78,47.22$

D. The 95% confidence interval ranges from 42.78 to 47.22 hours.

To solve the interval, we used the upper and lower limit formulas wherein:
xbar = 45
z = 1.96
s = 8
n = 50

How many terms are in this equation
8y-6y^2/7^3