dezariaspencer dezariaspencer

02-05-2018
Mathematics

contestada

solve the system using the substituion method
-4x+y=8
x-3y=9

Respuesta :

nilbert nilbert

02-05-2018

Hi there!

x - 3y = 9
x = 9 + 3y

-4x + y = 8
-4(9+3y) + y = 8
-36 - 12y + y = 8
-36 - 11y = 8
-11y = 44
-y = 4
y = -4

x - 3y = 9
x - 3(-4) = 9
x + 12 = 9
x = 21

So, your answers are y = -4 and x = 21.

Hope this helps!

Answer Link

Otras preguntas

In the lungs there are tiny sacs of air, which are called alveoli. an oxygen molecule is trapped within a sac, and the uncertainty in its position is 0.12 mm. w

Which heat transfer process is increased by profuse sweating?

It takes an insect 15 seconds to crawl 1 ft. How many hours would it take the insect to crawl 1 mi if the insect crawls at the same rate

The total force acting on an object is equal to... A.) it’s mass times acceleration B.) it’s weight times it’s acceleration C.) it’s acceleration divided by i

What knd of weather would you describe as ominous?

Find S15 for the series -1 + -3 + -5 + -7 +...

You are assigned to weigh mrs. abrera using an electronic scale. when you plug the unit into the outlet, a spark shoots out. the digital display comes on, sugge

The length of a rectangle is 13 centimeters less than five times its width. Its area is 28 square centimeters. Find the dimensions of the rectangle.The width is

***30 POINTS EASY IF U KNOW ECONOMICS*** A country in autarky would consume at a point _____ its PPF, while a country that engages in trade would consume at a p

Evaluate C (9, 3). 504 84 60,480 5,040