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3 years ago

What is the solution of the system? Use elimination. 5x = -30 + 5y 20y = 105 + 5x 0 (-1,4) D5, 20) KO (-1, 5) (5.-1)

Mathematics

1 answer:

user100 [1]3 years ago

6 0

<h2>Answer:</h2>

First, we will use elimination to solve for y.

$5x = -30 + 5y\\20y = 105 + 5x\\\\5x - 5y = -30\\-5x + 20y = 105\\\\15y = 75\\\\y = 5$

Now, we will use what we got for y to solve for x.

$5x = -30 + 5(5)\\\\5x = -30 + 25\\\\5x = -5\\\\x = -1$

Solution:

$(-1, 5)$

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2 years ago

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3 years ago

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Answer:

<u>GIVEN :-</u>

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<u>FACTS TO KNOW BEFORE SOLVING :-</u>

$\sin \theta = \frac{Side \: opposite \: to \: \theta}{Hypotenuse}$
$\cos \theta = \frac{Side \: adjacent \: to \: \theta}{Hypotenuse}$

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2 years ago

What is the solution of the system? Use elimination. 5x = -30 + 5y 20y = 105 + 5x 0 (-1,4) D5, 20) KO (-1, 5) (5.-1)​

What is the solution of the system? Use elimination. 5x = -30 + 5y 20y = 105 + 5x 0 (-1,4) D5, 20) KO (-1, 5) (5.-1)