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just olya [345]
3 years ago
14

3x - 15 = 7 - 8x how do you solve this​

Mathematics
2 answers:
Sphinxa [80]3 years ago
8 0

Answer:

324

Step-by-step explanation:

3x3 = 9

9-15 = -6

8x8=64

7-64=-54

-54 x -6 = 324

Nikitich [7]3 years ago
6 0

Answer:

<em>X=2</em>

Step-by-step explanation:

3x-15=7-8x

3x+8x=7+15

11x=22

x=\frac{22}{11}

x=2

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A supply company manufactures copy machines. The unit cost C (the cost in dollars to make each copy machine) depends on the numb
ArbitrLikvidat [17]

Answer:

  $9327

Step-by-step explanation:

Apparently, the cost function is supposed to be ...

  C(x) = 0.4x^2 -112x +17167

This can be rewritten to vertex form as ...

  C(x) = 0.4(x^2 -280) +17167

  C(x) = 0.4(x -140)^2 +17167 -0.4(19600)

  C(x) = 0.4(x -140)^2 +9327

The vertex of the cost function is ...

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The minimum unit cost is $9327.

_____

<em>Comment on the question</em>

You found the number of units that result in minimum cost (140 units), but you have to evaluate C(140) to find the minimum unit cost.

8 0
3 years ago
(38x-8)(2x+38-6)(8x-10)
Svet_ta [14]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Select the correct answer.
mr Goodwill [35]
I believe its c because that is the suitable answer
6 0
2 years ago
A cooler has 12 apple juices and 15 grape juices. 9 of the apple juices are sugar free and 5 of the grape juices are sugar free.
antoniya [11.8K]
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8 0
3 years ago
Read 2 more answers
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Ivanshal [37]
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8 0
3 years ago
Read 2 more answers
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