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pentagon [3]
4 years ago
15

-4.5x-2y=-12.5 3.25x-y=-0.75 solve by elimination

Mathematics
1 answer:
creativ13 [48]4 years ago
5 0
-4.5x-2y=-12.5 and 3.25x-y=-0.75
we first multiply the second equation by -2
(-2)*(3.25x-y=-0.75)=-6.5x+2y=-1.5
add the equation to eliminate the y
so yo get (-4.5x-6.5x)=(-12.5-1.5)
-11x=-11
x=1
now we plug in x into any equation to solve for y
-45x-2y=-12.5 and x=1
(-45*1)-2y=-12.5
-4.5-2y=-12.5
-2y=-12.5+4.5
-2y=-8
y=4
then your answer is x=1 and y=4
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Step-by-step explanation:

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Then 3 adds $25 dollars.

Because 1 started at $45, that means it is a rate of 25 dollars per hour, but a starting cost of 20+25= $45.

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3 years ago
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Paladinen [302]

Answer:

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Step-by-step explanation:

1. The general equation form is;

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3 years ago
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kherson [118]

Answer:

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