mikaylafeist mikaylafeist

01-12-2016
Mathematics

contestada

Which ordered pair is the solution to the system of equations?
2x−y=−5
x+3y=22

A.(1, 7)
B.(4, 9)
C.(7, 19)
D.(8, 21)

Respuesta :

wizard123 wizard123

01-12-2016

Multiply top equation by 3

---> 6x -3y = -15
---> x + 3y = 22

Add equations together, this way the y terms will cancel themselves out.

---> 7x = 7

Solve for x

x = 7/7 = 1

Therefore the answer must be A) (1,7)

Answer Link

Otras preguntas

if anyone steals an animal from a leader in the court, the thief shall pay back thirty times the animal’s value. if it belongs to a free man of the king, the th

inhumane farming methods are detrimental to both crops and animals.Critically discuss how animals get affected.

A car starts from rest and accelerates at 4 m/s2 until it reaches 36 m/s. How far did it travel in this time?

combinations lying the production possibilities frontier are impossible to produce with the current resources and technology.

25 25 4 2º A = 25. = C=

Use the poem Love after Love, by Derek Walcott to answer the following questions. The word feast in the final stanza suggests that you ______ your life. remembe

In 3–5 complete sentences, thoroughly explain how your protagonist changes from the beginning of the story to the end in your Module One short story. Provide at

How did Mrs.Dorling react when the narrator said, “I am Mrs.s’s daughter.”?

The interior angle of a regular polygon is 14 times larger than the exterior angle. How many sides does the polygon have??

I WIL VOTE BRAINLISET SOMEONE PLEASE HELP