Answer:
See below.
Step-by-step explanation:
First one is true.
The fourth statement also ( where the extreme value occurs).
According to PEMDAS (Parenthesis, Exponents, Multiply, Divide, Add, Subtract):
25 - (12 - 4) ÷ 0.4
25 - 8 ÷ 0.4
25 - 20
5
Answer:
a=75
Step-by-step explanation:
85^2-40^2=5625
then the square root of that is 75