tylersaiz0302 tylersaiz0302

24-01-2019
Mathematics

contestada

Solve the equations by elimination.
-7x-8y=9
-4x+9y=-22

Respuesta :

Ammimochi Ammimochi

24-01-2019

Solve for x in -7x - 8y = 9

x = -9 + 8y/7

Substitute x = -9 + 8y/7 into -4x + 9y = -22

4(9 + 8y)/7 + 9y = -22

Solve for y in 4(9 + 8y)/7 + 9y = -22

y = -2

Substitute y = -2 into x = -9 + 8y/7

x = 1

Thus,

x = 1

y = -2

Answer Link

Otras preguntas

What does authoritarian mean? requiring acknowledgment of authorship requiring strict obedience to an authority, such as a dictator ruling by aristocracy ru

A marble factory produces marbles that weigh 10 grams apiece. The standard deviation of the weight of a bag of 100 marbles is 20 grams. You buy a bag of 100 mar

what did the tigris and euphrates give to the people

The Alien and Sedition Acts were designed to: keep the number of foreign immigrants to the United States at a minimum give a formal recognition to the party sys

If 75% is £60 what is the full cost

what is the name given to a large body of of salt water that is smaller then an ocean

What is 10/15 simplified

Write 8/74 in simplest form User: simplify (x^3)^5

Because the British government had imposed taxes on colonists without representation, the drafters of the Articles of Confederation

If an outdoor runner develops a headache, feels tired, and has an elevated heart rate, what is the most probable cause? A. Insufficient calories B. Overhydratio