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Tema [17]
3 years ago
5

4. A comprehensive study conducted by the National Institute of Child Health and Human Development tracked more than 1,000 child

ren from an early age through elementary school (New York Times, November 1, 2005). The study concluded that children who spent more time than 30 hours a week in child care before entering school tended to score higher in math and reading when they were in the third grade. The researchers cautioned that the findings should not be a cause for alarm because the differences were found to be small. Explain how the difference between the math and reading score for the child care group and the overall mean for third graders could be small but the researchers could still reach the conclusion that the mean for the child care group is significantly higher than the overall mean.
Mathematics
1 answer:
andrezito [222]3 years ago
7 0
Yes that’s right all
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Write the number in two other forms. <br> 0.489
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Answer:

489/1000 and 48.9%

Step-by-step explanation:

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3 years ago
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Which expression is equivalent to (8x^3) 2/3? select all that apply.
yKpoI14uk [10]

Answer:

A

Step-by-step explanation:

Here, we simply want to select the indices that is equivalent to the given expression

(8x^3)^2/3

That is same as;

8^2/3 * x ^3 * 2/3

That will be;

2^2 * x^2

= 4x^2

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3 years ago
295% of what number is 177?
Fofino [41]

Answer: 522.15 I think

Step-by-step explanation:

1. We assume, that the number 177 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 177 is 100%, so we can write it down as 177=100%.

4. We know, that x is 295% of the output value, so we can write it down as x=295%.

5. Now we have two simple equations:

1) 177=100%

2) x=295%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

177/x=100%/295%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 295% of 177

177/x=100/295

(177/x)*x=(100/295)*x       - we multiply both sides of the equation by x

177=0.33898305084746*x       - we divide both sides of the equation by (0.33898305084746) to get x

177/0.33898305084746=x

522.15=x

x=522.15

now we have:

295% of 177=522.15

3 0
3 years ago
What is the solution to the system graphed below
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Answer:

92398721

Step-by-step explanation:

7 0
3 years ago
Oscar has received a $4,000 gift and is looking for a bank to start a savings account. Which option
kirza4 [7]

Answer:

The best option for him would be a real interest rate of 5%.

Step-by-step explanation:

The nominal interest rate is the one that represents the percentage of increase of the money that is in a certain investment, without discounting the depreciation due to inflation or the payment of taxes.

On the other hand, the real interest rate is the one that represents the real increase in the money invested, after discounting inflation and any taxes to be paid.

Therefore, the best option for Oscar would be to invest his $ 4,000 in a savings account with a real interest rate of 5% per year.

7 0
3 years ago
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