mikaylafeist mikaylafeist

01-12-2016
Mathematics

contestada

Which ordered pair is the solution to the system?
x+5y=−3
2x+7y=3

A.(12, −3)
B.(−13, 2)
C.(−2, 1)
D.(22, −5)

Respuesta :

wizard123 wizard123

01-12-2016

For this one you want to cancel out the x-terms.
Multiply top equation by -2

---> -2x -10y = 6
---> 2x +7y = 3

Add them together

---> -3y = 9

Solve for y ...

Answer Link

Otras preguntas

Explain how each of the following people would talk about scarcity and trade-offs. a. The President of the United States: b. The leader of a developing nation.

why did president Roosevelt intervene in the negotiation to end the russo- japanese war

Only married people are called by God to live for others. True False

Tammy is selling cookies for a fundraiser. She promised to sell 120 boxes by the end of the month. If she has sold 1/3 of her boxes so far, how many boxes has s

N/12 =300 N=? Please help

A hotel room cost $88 per night and you are getting 2 rooms for 6 nights for the group on your trip. What is the total hotel bill, without tax and fees? a. $10

In 2015 a population of a small town in Florida is 95. If the population increases by 15% every year, approximately how many people will there be in 2023

Find the probability Thanks!

A gas in a fixed container is at a pressure of 4 atm and at a temperature of 27 o c. what will its pressure be if it is heated to a temperature of 177 o c? (jus

What was one way the United States changed because of land grants made to private companies? A) The granted land allowed transportation and communication infras