Seudónimo Seudónimo

02-12-2016
Mathematics

contestada

solve system by elimination
9x-3y=3
3x+8y=-17

Respuesta :

apologiabiology apologiabiology

02-12-2016

multiply 2nd equation by -3 and add to first

9x-3y=3
-9x-24y=51+
0x-27y=54

-27y=54
divide both sides by -27
y=-2

sub back
3x+8y=-17
3x+8(-2)=-17
3x-16=-17
add 16 to both sides
3x=-1
divide 3
x=-1/3

(x,y)
(-1/3,-2)

Answer Link

Otras preguntas

A price increases from $82 to $89.38. What is the percent change

Describe three costs of production that are supply shifters.

what organization's purpose include maintaining international peace

What happens to the molecules in an oxygen take.( think about the tanks we would use when we are scuba diving.

Need help ASAP! I will give Brainliest answer to the person who answers best!

Solve w + 1⁄4 < 7⁄8.

Events A and B are independent. Find the missing probability. P(b)=9/20,p(a|b)=1/5,p(a)=?

why was the elastic clause debated

Some argue that television is a good influence on teens. They say that educational broadcasts, historical programs, and news broadcasts help students learn abou

HELP Which of the following are true for simple diffusion? This is typical for large molecules. It is how oxygen and carbon dioxide travel across the cell membr