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miv72 [106K]
3 years ago
10

Which shows a correct order to solve this story problem? Each morning Debra reads for 1.2 hours. Each evening she reads for 2.5

hours. How many hours will Debra have read in 8 days? A. Step 1: Multiply 1.2 by 8. Step 2: Multiply 2.5 by 8. Step 3: Subtract the two products. B. Step 1: Multiply 1.2 by 8. Step 2: Multiply 2.5 by 8. Step 3: Add the two products. C. Step 1: Multiply 1.2 by 2.5. Step 2: Multiply the product by 8. D. Step 1: Multiply 1.2 by 2.5. Step 2: Divide the product by 8.
Mathematics
1 answer:
mihalych1998 [28]3 years ago
6 0
Given:
Each morning: 1.2 hours of reading
Each evening: 2.5 hours of reading
Total number of hours spend reading in 8 days.

<span>B. Step 1: Multiply 1.2 by 8. Step 2: Multiply 2.5 by 8. Step 3: Add the two products
</span>
1.2 hours * 8 days =   9.6 hours
2.5 hours * 8 days =<u> 20 hours</u>
                     total        29.6 hours
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Heights for women are bell-shaped with a mean of 65 inches and standard deviation of 2.5 inches. If a random sample of 16 women
loris [4]

Answer:

μ= 65 inches; σ= 0.625 inch

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed(bell-shaped) random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

\mu = 65, \sigma = 2.5

By the central limit theorem, the sample of 16 will have:

\mu = 65, \sigma = \frac{2.5}{\sqrt{16}} = 0.625

So the correct answer is:

μ= 65 inches; σ= 0.625 inch

8 0
3 years ago
MARK AS BRAINLIEST
labwork [276]

Answer:

C [-2 < x]

Step-by-step explanation:

-6(x - 2) < 24

________ ___

-6 -6

x - 2 > -4

+ 2 + 2

_________

x > -2

** Whenever you divide\multiply by a negative, you reverse the inequality symbol.

I am joyous to assist you anytime.

6 0
3 years ago
Can someone solve this
marysya [2.9K]

From the Arithmetic Information given, Pr = 0.049375 ≠ -8.050625 ≠ 0.0325  See explanation below.

<h3>

What are the step by steps solution to the questions above?</h3>

First, lets us restate the question properly. We have

Pr = 1 - ((6*12+6)/80)² = 1 - ((9*12²)/1600) - ((3*12*6)/1600) - (6²/6400) = 1 - 0.005625 * 12² - 0.001875 * 12 * 6 - 0.00015625 * 6²

Note that there are three equals signs. So lets divide the problem according and solve for the different parts.

Lets   1 - ((6*12+6)/80)²  ............A

1 - ((9*12²)/1600) - ((3*12*6)/1600) - (6²/6400) .............B; and

1 - 0.005625 * 12² - 0.001875 * 12 * 6 - 0.00015625 * 6² ........C

Solving for A we have

1 - (78/80)²

= 1 - (0.975)²

= 1 - 0.950625

A = 0.049375


Solving for B we have

1 - ((9*12²)/1600) - ((3*12*6)/1600) - (6²/6400)

= 1- (14,256/1600) - (216/1600) - (36/6400)
= 1 - 8.91 - 0.135 - 0.005625

B = -8.050625

Solving for C we have

1 - 0.005625 * 12² - 0.001875 * 12 * 6 - 0.00015625 * 6²

= 1 - 0.005625 * 144 - 0.001875 * 12 * 6 - 0.00015625 * 144

= 0.0325


In summary we can state that:

A = 0.049375

B =  -8.050625

C = 0.0325

Given that there were no abstract quantities, we can state that

Pr = A ≠ B ≠C or

Pr = 0.049375 ≠ -8.050625 ≠ 0.0325

Learn more about equations with equal signs at

brainly.com/question/18924248
#SPJ1

4 0
2 years ago
Leah gets paid $795 biweekly. What is the recommended monthly rent that she can afford?
Pepsi [2]

I would say since thats $1500+ a month about 600 dollars, because she will have bills and then have to buy food drinks and alot more.

3 0
2 years ago
Read 2 more answers
The change in the value of an account when given to the nearest dollar ? Identify the set of numbers that best describes .
AveGali [126]
When an account is rounded off to its nearest dollar will change based on the place value. For example, the given account of money if $ 56 730, then it will be rounded to its nearest ten thousands. Then the given amount will be rounded to $57,000 in where the given money rounded up and gain up to $300. But if the money will be rounded with its nearest hundreds, the money will become $ 56,700. Notice that the given money rounded down and lost $30 dollars.



7 0
3 years ago
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