Subtract the mean from cach value of the random variable x.​

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3

the answer would be  

a.

3: 1

step-by-step explanation: