2 years ago

A turntable makes 45 revolutions per minute. How many revolutions does it make per second?

Mathematics

1 answer:

Stolb23 [73]2 years ago

7 0

Answer:

45/60=0.75

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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PLEASE HELP ME NOW URGENT

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ANSWER

$y = 3 \pm \sqrt{21}$

EXPLANATION

The quadratic equation is:

${y}^{2} - 6y - 12 = 0$

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${y}^{2} - 6y = 12$

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${y}^{2} - 6y + ( - 3) ^{2} = 12 + ( - 3) ^{2}$

${y}^{2} - 6y + 9= 12 + 9$

The LHS us now a perfect square trinomial:

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Take square root:

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Answer:

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