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Arada [10]
3 years ago
7

What is 7x+5y=-7 and 9x-2y=-9

Mathematics
2 answers:
Brilliant_brown [7]3 years ago
8 0
X=-1 and y=0. I hope.

dedylja [7]3 years ago
6 0
1. X= - 1 5y/7 

2. X= 2y/9 - 1

I hope this helps. :)
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Table:

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Equation:

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Dependent variable:

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Answer:

It's the first option

Step-by-step explanation:

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77julia77 [94]

Answer:

<em>0 $20 bills and 10 $5 bills</em>

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<em>2 $20 bills and 2 $5 bills</em>

Step-by-step explanation:

<u>Equations</u>

Let's set:

x=number of $5 bills

y=number of $20 bills

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5x+20y

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x+4y=10

We would need another condition to solve for x and y, but we can determine some combinations that solve the problem.

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Swapping sides:

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Dividing by 4:

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x=10-4*0=10

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For y=1

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For y=2

x=10-4*2=2

x=2

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1 $20 bills and 6 $5 bills

2 $20 bills and 2 $5 bills

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Fynjy0 [20]

Answer:

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