paige25 paige25

12-04-2016
Mathematics

contestada

8x+4y=-20 and -4x-8y=-20 solve each system by substitution

Respuesta :

benjaminhe benjaminhe

12-04-2016

8x + 4y = -20
4y = -20 - 8x
y = -5 -2x

-4x - 8y = -20
-4x - 8(-5-2x) = -20
-4x + 40 + 16x = -20
12x = -60
x = -5

8(-5) + 4y = -20
-40 + 4y = -20
4y = 20
y = 5

Answer Link

Otras preguntas

the music for the nutcracker was composed by __________.

Can someone tell me the answer to this please???

please help i’ll give brainlist for this d- lines 9 and 10

If a solid is placed in a liquid and lots of bubbles are formed, is this a physical change

PLEASE HELP 8. Does the fact that he chose to fight Jim Crow laws privately change your understanding of Washington's philosophy?

A population of turtles was introduced to an island that is favorable for the turtles to inhabit. Describe what the population graph would look like for this tu

Assess the impact of U.S. free trade with Southeast Asian countries. A. It has led to economic instability in all countries. B. It has led to economic devel

paula caught a tarpon with a weight that was 11 times as the weight of a permit fish she caught. The total weight of the two fish was 156 pounds. how much did t

Is Jim crow alive and well? Why or Why not?

what is your wire value in the X value is five? 18.6, 16.6, 17.6, 19.6