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amm1812
3 years ago
9

Are the lines 5x-5y=12 and x-y=-3 perpendicular or parallel

Mathematics
1 answer:
Goshia [24]3 years ago
3 0
Parallel both have slope 1
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Answer:

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Sumatran coffee y=14

Step-by-step explanation:

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x+y=20 ⇒ x=20-y

substitute in the equation:

8x+7y=7.3(20)

8(20-y)+7y=7.3(20) for 20 pound blend

160-8y+7y=146

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y=14 pond

x+y=20

x=20-14=6

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