2 years ago

Please help:( if anyone is good at algebra, assist me in this tragic time

Mathematics

2 answers:

Pepsi [2]2 years ago

6 0

So sorry if it’s wrong

Evgen [1.6K]2 years ago

5 0

Step-by-step explanation:

x -2 -1 2 7

y -6 -6 -2 3

All y are in under root

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About 29

Step-by-step explanation:

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Answer:

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2 years ago

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Vaselesa [24]

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4:1 (I think)

Step-by-step explanation:

Let's write some equations first:

For both prices increasing by 20:

$\frac{x+20}{y+20} =\frac{5}{2}$

then we can use cross multiplication

2x+40=5y+100

For both prices decreasing by 5:

$\frac{x-5}{y-5} =\frac{5}{1}$

same here:

5y-25=x-5

Using substitution for 5y, we get: 5y=x+20

2x+40=5y+100

2x+40=x+20+100

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plugging this in to the second equation:

5y-25=x-5

5y-25=80-5

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Step-by-step explanation:

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