D because we have divide to find the unit rate.
Look at the picture.
Use the Pythagorean Teorem:
Answer:
see explanation
Step-by-step explanation:
Given
- (
)²
The negative is outside the bracket and is not squared, that is
= -
× 
= -
= - 
Given
=
= 
Answer:
A = 2 (on the left). 10 (on the right)
Step-by-step explanation:
Use pythgaros therom
Do 7^2 - 3^2 = 40
Do square root of 40 which equals the answer