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sesenic [268]
3 years ago
9

Help solve this picture

Mathematics
1 answer:
blagie [28]3 years ago
6 0
X + y - z = 9
3x - y + z = -13
____________(+)___
4x =  -4 => x = -1 => y - z = 10;
But, x - 2y + 4z = -1 => -2y + 4z = 0 => -y + 2z = 0;

 y  -  z = 10
-y + 2z = 0
_________(+)__
/       z = 10 =>   y = 20 .

A. There is one solution. The solution is ( - 1, 20, 10 ).
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Gemiola [76]

The least and highest value of the house before being rounded are £184999 and £175000 respectively.

The initial value of Sue's house before the increase is £205,000

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The least value of house would be a sum in which the third significant value is 5 and the succeeding values are lowest.

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2.)

Let the price before the increase = p

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Therefore, the price of the house before the increase is p = £205,000

Learn more : brainly.com/question/25338987

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