Answer:
-72
Step-by-step explanation:
-32 + (2-6)(10).
PEMDAS
parentheses first
-32 + -4*10
Then multiply
-32 -40
Then subtract
-72
1.No denominator contains a radical.
2.no radicand contains a fraction
Answer: 
Step-by-step explanation:
Given:

To make
the subject of the formula means that we want to make
to stand alone , the first thing to do is to multiply through by 1/4a , that is

take the square of both sides:

<span>1*441 & 3*147 & 7*63 & 9*41 &21*21 are all factor pairs of 441
</span>
21&21 have the smallest sum and would make for the smallest perimeter
Answer:l=21 w=21