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Ronch [10]
4 years ago
5

Solve the following system of equations. 2x-5y=6 -2x+10y=-16 x= y=

Mathematics
1 answer:
koban [17]4 years ago
4 0
<span>x =<span>−<span><span>2<span> and </span></span>y </span></span></span>=<span>−<span>2. Hope this helps</span></span>
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Answer:

  C.  11

Step-by-step explanation:

Substituting, we have ...

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The value from the set that makes the equation true is x = 11.

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<em>Alternate methods of solution (other than substitution)</em>

It can be easier to make use of your knowledge of factoring:

  8x = 8·11

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Or to make use of your knowledge of numbers (place value):

  8·10 = 80

so x will not be very different from 10.

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