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Ksivusya [100]
3 years ago
8

A music recording studio charges a flat fee of $45.00 plus $8.50 per hour to record your music.Another recording studio charges

$27.59 plus $11.00 an hour to record music.Find the number of hours for which costs are the same

Mathematics
1 answer:
ANEK [815]3 years ago
5 0

Let, after t hours costs are the same.

Mathematical equation of charges taken by first studio :

y=45+8.5t

Mathematical equation of charges taken by second studio :

y=27.59+11t

So,

45+8.5t=27.59+11t\\\\2.5t=17.41\\\\t=6.964\ hours

Therefore, after 6.964 hours cost of both studio is same.

Hence, this is the required solution.

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Answer:

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Step-by-step explanation:

Given:

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Now taking sin^{-1} we get;

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Step-by-step explanation:

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What are the solutions of the compound inequality 2d + 3 ≤ –11 or 3d – 9 > 15?
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Step-by-step explanation:

Given  : 2d + 3 ≤ –11 or 3d – 9 > 15.

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On dividing both sides by 3 .

d > 8 .

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