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irina1246 [14]
3 years ago
7

Of every 30 minutes of television air time, about 8 minutes are commercials. if 90 minutes of tv are aired, how many minutes of

commercial will be played
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
7 0
The answer is 24 minutes are commercials.
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Answer:

  6.  x = 3

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Put the number in place of the expression it is equal to, then solve for x.

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6) g(x) = -x +5

  2 = -x +5 . . . . . . . . . g(x) is replaced by 2, because g(x) = 2

  x +2 = 5 . . . . . . . . . . add x to both sides

  x = 3 . . . . . . . . . . . . . subtract 2 from both sides

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8) n(x) = -2x -21

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<em>Additional comment</em>

We have shown a couple of ways these equations can be solved. You can separate the x-term and the constant terms before you divide by the x-coefficient, or you can do it after. In the first equation, we could have solved it ...

  2  -x +5

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The way we did it avoids negative numbers.

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