Answer:

Step-by-step explanation:
Here first open the inner parentheses and use the distributive property,

Answer:
112 m
Step-by-step explanation:
The area (A) of a square is
A = s² ( s is the length of side )
Here A = 784 , then
s² = 784 ( take the square root of both sides )
s =
= 28
Then
perimeter = 4s = 4 × 28 = 112 m
Answer:
D, All of the above.
Step-by-step explanation:
(A. set fitness goals
B. track performance
C. spot areas for improvement)
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