A regression-based forecast has yielded a coefficient of correlation (r) equal to 0.754. What is the coefficient of determination?

0.568516

Step-by-step explanation:

To find the the Coefficient of determination you simply square r.

Just make sure you have the original r value and not the rounded value.

0.754^2 = 0.568516

and then depending on how many decimals you need to round to...

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk