583hks8to6o9 583hks8to6o9

03-04-2019
Mathematics

contestada

2x+5y=20. , -2x+20y=-90. one solution. infinity many ir no solution. use elimination to find your answer

Respuesta :

03-04-2019

2x+5y=20
X=10-2.5y

-2(10-2.5y)+20y=-90
-20+5y+20y=-90
25y=-70
Y=2.8

2(2.8)+5y=20

5.6+5y=20
5y=14.4
Y=2.88

CHECK:
2(2.8)+5(2.88)=20

Ver imagen xAJHx

Answer Link

Otras preguntas

how do you do 37+87(mod7)

when is it important to cite your source a. when you quote someone directly b.when you use commonly available information c.when you paraphrase a dictionary def

if a pencils H# is decreased than1. the level of clay used increases2. the texture of the graphite becomes harder 3. the lines produced will be lighter 4. the

Two types of software that are mandatory for any business are an accounting program and a ______ Security suite Gaming program Photography program Musi

if you help with the correct answer u are a god .pt2

(6,-3)(10,-6)(14,-9)Y-interceptX-interceptDetermine the intercepts of the line that passes through the following points.

What is an indulgence? a religious sacrament similar to communion sinning through excessive consumption of food or alcohol forgiveness of sins achieved through

What are the possible side lengths of a triangle? 3 cm 5 cm 9 cm

Ugggghhhh, I honestly hate math....

how do you do 37+87(mod7)