1 answer:
Answer:
f=ab/a+b
Step-by-step explanation:
Let's solve for f.
1/f=1/a+1/b
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Answer: n= number of books
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Step-by-step explanation:
Answer:
78 quarters
Step-by-step explanation:
I think because, I created an equation, 5x = 390 and solves to get 78
44% 11/25 are both the answers
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Step-by-step explanation:
