I think this is how you do it...
Answer: r = -0.64
Step-by-step explanation:
The correlation coefficient is a measure of the strength of the linear relationship between two variables and is denoted by r. Values between 0.3 and 0.7 indicate a moderate positive (negative) linear relationship .
Values between -0.3 and -0.7 indicate a moderate negative linear relationship .
The only value of r in the option is r= -0.64 lies in given interval of moderate negative linear relationship .
Therefore, c is the right answer.
according to the chart below, what percentage of ralph’s expenses are items other than taxes?
a. 65%
b. 71%
c. 75%
d. 94%
the answer is A 65%
We can solve this problem in three steps.
<u>1) find the area of the square</u>

<u>2) find the area of the triangle</u>

<u>3) add the areas together</u>

<em>a = 57 ft²</em>