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14.02.2021 •
Mathematics
The difference of a number 8 and 12 is three. Find the number.
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Ответ:
Step-by-step explanation:
Let the number be y,
y-8-12 = 3
y-20. = 3
y. =. 20+3
y =. 23
PLEASE MARK BRAINLIEST.
Ответ:
Option C. 4(20-16y): Each side measures 20-16y units.
Step-by-step explanation:
we know that
The perimeter of a square is equal to
where
b is the length side of the square
we have
substitute the given value in the formula
solve for b
Divide by 4 both sides
Rewrite the expression
Alternative Method
we have
Factor 4
so
Each side measures (20-16y) units.