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natta225 [31]
3 years ago
8

What is Decrease 90 by 1/2

Mathematics
2 answers:
devlian [24]3 years ago
8 0

Answer:

45

Step-by-step explanation:

\frac{1}{2} × 90 = 45

Decrease means to subtract the amount by 45, then

90 - 45 = 45

svetlana [45]3 years ago
6 0
The answer is 45. You just divide 90 by 2 or times 90 by half.
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3 years ago
The ratio of Sam's age to Hank's age is 5 to 3. If the sum of their ages is 24, how old is Hank?
posledela
S-Sam's\ age\\H-Hank's\ age\\\\  \left\{\begin{array}{ccc}\frac{S}{H}=\frac{5}{3}\\S+H=24&\to S=24-H\end{array}\right\\\\substitute\ S=24-H\ to\ \frac{S}{H}=\frac{5}{3}\\\\\frac{24-H}{H}=\frac{5}{3}\\\\cross\ multiply\\\\5H=3(24-H)\\5H=72-3H\\5H+3H=72\\8H=72\ \ \ /:8\\H=9\\\\Answer:Hank\ is\ 9\ years\ old.
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Step-by-step explanation:

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