3 years ago

WILL GIVE BRAINLIST PLS HELP Find x. Round your answer to the nearest tenth.

Mathematics

1 answer:

Llana [10]3 years ago

6 0

Answer:

9. x=13.5

10. x=11.5

Step-by-step explanation:

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3 years ago

3. 2x – y = -7 4x – y = -4 A) (-1.5, 4) B) (1.5, 10) C) (4, -1.5) D) (-1.5, -2)

marishachu [46]

Multiply first equaton by -1 and add to first

-2x+y=7
4x-y=-4 +
2x+0y=3

2x=3
divide 2
x=3/2

sub
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minus 3
-y=-10
negative 1 times both sides
y=10

(3/2,10)
(1.5,10)

B is ansre

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3 years ago