The area of a square postcard is 25 square inches. How long is each side postcard?
2 answers:
Answer:
The side is 5 square inches.
Step-by-step explanation:
Area of square formula:
A = s x s or
To figure out the sides, we use this formula:
A = 25 ÷ s = s
But to figure out s = side, think of factors of 25 like this:
25: 1,5,25
Now let's plug in the factors of 25 to figure out the missing side length.
A = 25 ÷ 1 = 25
This is not true.
A = 25 ÷ 5 = 5
This is true.
A = 25 ÷ 25 = 1
This is not true.
So our answer is 5 square inches on each side.
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FOIL is an ancronym to help you remember to multiply each term. basically it's for people who can't distribute good
anwya
FOIL stands tells you which terms to mulitply, you then add the results up
F=First terms
O=Outer terms
I=Inner terms
L=Last terms
so
(x-2)(x-3)
First: x times x =
Outer: x times -3=-3x
Inner: -2 times x=-2x
Last: -2 times -3=6
now add them all up
answer is the second option