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3 years ago

Solve the system if equations x + y = 30 y = 9x

Mathematics

2 answers:

Kitty [74]3 years ago

5 0

Answer:

(3, 27)

Step-by-step explanation:

I will use substitution method.

y = 30-x

y = 9x

30 -x = 9x

30 = 10x

x = 3

So far we have (3, ?).

Now that we know x, we can plug in x to one of the equation to find y. I will plug it in at the bottom equation.

y = 9(3)

y = 27

Now we know that the solution is (3, 27).

kolbaska11 [484]3 years ago

5 0

X=3 y=27...I hope that helps!

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4 years ago

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3 years ago

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Step-by-step explanation:

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