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3 years ago

Marcy played the piano for 45 minutes.She stopped playing at 4:15 P.M.At what time did she start playing the piano

Mathematics

1 answer:

musickatia [10]3 years ago

3 0

15-45=-30
60-30=30
so the answer is 3:30

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3 years ago

Solving rational equations solve for x: 3/x-4=7/x

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Solving the rational equation $\frac{3}{x-4}=\frac{7}{x}$ the value of x is 7

Step-by-step explanation:

We need to solve rational equation: $\frac{3}{x-4}=\frac{7}{x}$ and find value of x.

Solving:

$\frac{3}{x-4}=\frac{7}{x}$

Cross multiplying:

$3(x)=7(x-4)\\Simplifying:\\3x=7x-28\\3x-7x=-28\\-4x=-28\\x=-28/-4\\x=7$

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Keywords: Solving the rational equation

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2 years ago

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zalisa [80]

Answer:

Step-by-step explanation:

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3 years ago

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Answer:

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2 years ago

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Step-by-step explanation:

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4x-4x= 4x-4x

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