Answer:
169 
Step-by-step explanation:
4 * s = 52
s = 13
Area = side * side = 13 * 13 = 169
Answer:
a - 2b
Step-by-step explanation:
❖ Step 1: Distributive negative sign.
❖ Step 2: Combine like terms.
Therefore, the answer is a - 2b.
Have a lovely rest of your day/night, and good luck with your assignments! ♡
Answer:
27
Step-by-step explanation:
To evaluate f(8) substitute x = 8 into f(x)
f(8) =
× 8² - (
× 8 + 3)
=
× 64 - (2 + 3)
= 32 - 5
= 27
Answer:
102.849
Step-by-step explanation:
the perimeter of the square is just 4 × 18.
for the semi-circle the perimeter should be R(pi + 2)
so the perimeter of a semi circle is 30.849
add both values for the final answer which is 102.849
Answer:
15
Step-by-step explanation:
You know that it takes 3 mins for 45 sit-ups so then you wanna find how much for 1 minute. It shows 3 mins which is 3 times as much as 1 minute. There, 3/3 = 1. then you have to do it with the sit-ups too. so 45/3 = 15