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Wittaler [7]
3 years ago
15

Solve system by elimination 8x-8y=-16 -8x-7y=-29

Mathematics
1 answer:
Gnesinka [82]3 years ago
6 0
Add these together.
You get -15y=-45
So y=3

Now plug in to first equation.
8x-8(3)=-16
8x-24=-16
8x=8 so x=1

Check both values in second equation.
-8(1)-7(3)=
-8-21=-29

It works...so x=1, y=3
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3 years ago
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Step-by-step explanation:

The above answer explanation can be more clear by understanding that the population is the soil around the former waste dump and the samples are 16   which were taken from  EPA.In report, the method is unclear too.

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