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Aleonysh [2.5K]
3 years ago
9

Solve the following system of equations. Enter the y-coordinate of the solution. Round your answer to the nearest tenth.

Mathematics
2 answers:
lakkis [162]3 years ago
5 0
\sf 5x+2y=21
\sf -2x+6y=-34

We could solve for 'x' in the 2nd equation and then plug that into the first equation for 'x' and solve for 'y':

\sf -2x+6y=-34

Subtract 6y to both sides:

\sf -2x=-6y-34

Divide -2 to both sides:

\sf x=3y+17

Plug in 3y + 17 for 'x' in the first equation:

\sf 5x+2y=21

\sf 5(3y+17)+2y=21

Distribute 5:

\sf 15y+85+2y=21

Combine like terms:

\sf 17y+85=21

Subtract 85 to both sides:

\sf 17y=-64

Divide 17 to both sides:

\boxed{\sf y\approx -3.8}

This is the y-coordinate of the solution.
ss7ja [257]3 years ago
5 0

Answer:

-3.8

Step-by-step explanation:

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A rental car company charges $31.91 per day to rent a car and $0.07 for every mile driven. Hudson wants to rent a car, knowing t
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The inequality that can be used to determine x is 31.91x + 7 \leq 70

<u />

<h3>How to generate the inequality</h3>

<u>Given data</u>

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solution

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with a limit of less than or equal to the budget we have:

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The inequality above could be used to determine x

Read more on inequality here:  brainly.com/question/11613554

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1 year ago
Sean answered 18 of 20 quiz questions correctly. What percent of the quiz questions did Sean answer correctly?
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Step-by-step explanation:

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