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

I need help with a counter agrument for "material forces drive history"

Which is an example of a sport that has low equipment costs?

What would be most likely to happen to a plant that had working chloroplasts in its cells but had taken in a poison that kept mitochondria from working? A) It w

All of the following are qualities that can be enhanced through a vocational school education except _____. A. interpersonal skills B. writing skills C. cr

Use a number line to solve 235+123

you are measuring the mass of various shapes objecys and identifying their shaped ypu then record the qualitative and quanatitave data in a table is qualitataiv

whats the answer for this?? 2×56 (76,04??

round 5.04 to to nearest tenth

a habitat must include all of the following except a. food sources. b. favorable conditions for reproduction. c. more than one population of a given species. d.

Which best describes the impact of railroad expansion on the steel industry? A.It did not affect the demand for steel at all. B.It decreased the demand for stee