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Marat540 [252]
2 years ago
12

Kacie swam for 12 hours this week at YMCA pool. 25% of her pool time was spent on tree swim. The rest was in swimming classes. H

ow many hours did Kacie spend in swimming classes?
Mathematics
1 answer:
bezimeni [28]2 years ago
8 0

Answer:

9 hours

Step-by-step explanation:

25% of 12 is 1/4 of 12.

12/4 is 3.

25% of 12 is 3.

12-3=9

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Find two numbers a and b such that a+b=0 and ab=36
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Answer:

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Step-by-step explanation:

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- b^2 = 36

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so b = 6i   then a = -6i

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