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GREYUIT [131]
3 years ago
6

Solution of 3/x + 8/y = -1, 1/x - 2/y =2 is

Mathematics
1 answer:
coldgirl [10]3 years ago
8 0

Answer:x=1 and y=-2

Step-by-step explanation:

To solve

3/x+8/y=-1

1/x-2/y=2

Solve simultaneously

We get

3/x+8/y=-1

3/x-6/y=6

-7y=14

y=-2

To get x

Substitute for y in equation one

3/x+8/-2=-1

We have

3/x-4=-1

3/x=-1+4

3/x=3

x=1

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Since there were 685 cars all together you have to do 685 divided by 5 so that you can get your answer of 137 cars per hour

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4 years ago
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sergiy2304 [10]

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5 0
3 years ago
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I think the answer is d
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4 years ago
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HELP ASAP, DUE AT 11:59<br><br> g(-5)=
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Answer:

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Step-by-step explanation:

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