MATHEMATICS HIGH SCHOOL

The correlation coefficient r between a child age x and the number of minutes spent doing homework each day y is 0.694.What percent of the variation?

A. 30.6%
B. 48.2%
C. 51.8%
D. 69.4%

Answers

Answer 1
Answer: The final answer to your question is that the percent variation of  the correlation coefficient between a child age x and the number of minutes spent doing homework each day y with r = 0.694 is C. 51.8%.
Hope my answer would be a great help for you.
Answer 2
Answer:

Answer:

The answer is 48.2%

Step-by-step explanation:

The correlation coefficient r between a child age x and the number of minutes spent doing homework each day y is 0.694 i.e r=0.694

Now, we have to find percent of the variation.

The coefficient of determination isr^(2)

The square of r(correlation coefficient) is the percent of variation that is explained by the dependent variable.

If r=0.694 ⇒r^(2)= (0.694)^(2)=0.482 this means that 48.2% of variation in dependent variable.

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Miles bought a car that cost 23,556, nearest ten thousands, how much did the cart cost

Answers

Rounding to the nearest ten thousands, the car costed $20,000

1235678 has how many tens in it? how many hundreds in it? and how many thousands? explain

Answers

My guess:
It has 7 tens because the 7 is in the tenths place.
It has 6 hundreds in it because a 6 is in the hundredths place.
And 5 thousands because a 5 is in the thousandths place.

My second mathematical guess:
123,567.8 tens because 12345678 divided by ten is that.
123456.78 hundredths because ^^^hundreds
12345.678 thousandths because^^^ thousands
Or another explanation for my second guess is each 0 it has in it is another decimal place moved to the left of the digits 12345678.


Hahaha hope I helped. It's just a guess. Lol
7 tens, 6 hundreds, and 5 thousands.

jay discounts a 100-day note for 25,000 at 13%. the effective rate of interest to the nearest hundredth percent is what?

Answers

Jay were able to get a discount in a 100-day note which 25000 dollars and get a 13% discount. 

Let's solve for the effective rate interest of this 100-day note:
=> 25 000 * .13 = 3 250 dollars is the discount. 
Thus, the 13% discount that he got is 3 250

A function is created to represent the amount of money in your checking account. What restrictions would be made to the domain?-The domain would include all real numbers.* -The domain would only include positive integers. -The domain would only include positive numbers. -The domain would only include integers. I am thinking that it could also be negative. Thank you for any and all help!

Answers

Answer:

B. The domain would only include positive integers.

C. The domain would only include positive numbers.

Step-by-step explanation:

We are given a function that represents the amount of money in the checking account.

As, the function contains the amount of money in the account, the domain cannot have negative values.

So, the domain cannot include all real numbers and it cannot include only integers.

Therefore, the domain can include positive numbers and therefore, it can also include positive integers.

Hence, B and C are correct.
The answer I got was D. (now I'm just typing to make 20 characters) blah blah blah
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