koalarules6 koalarules6

24-11-2016
Mathematics

contestada

-4x+8y=-256 -6y = x. how do u solve this equation by substitution.

Respuesta :

apologiabiology apologiabiology

24-11-2016

to make it soo much easier, divide top equation by 4
-x+2y=-64

now
-6y=x
sub -6y for x
-(-6y)+2y=-64
6y+2y=-64
8y=-64
divide both sides by 8
y=-8

sub back
-6y=x
-6(-8)=x
48=x

x=48
y=-8
(x,y)
(48,-8)

Answer Link

Otras preguntas

Rewrite the expression as only multiplication and evaluate. 2 1 -

PLZ HELP ME WITH MY MATH HOMEWORK!!! SHOW WORK!!!

THE BOOK IS ON The Project Gutenberg EBook of The Secret Garden, by Frances Hodgson Burnett List 3 relationships and give examples from your life explaining how

Plz match the following

How do I write 4 times difference of a number and 8

PLEASE HELPPPP. I really need it

||50 POINTS|| Write a short description for each of the three steps in the voting process. A: Registering to vote B: Preparing to vote C: Casting your vote

ricks bikes 24 miles in 3/4 of an hour what is the speed in the miles per hour.

Which of the following is most likely the next step in the series?

Is 8,490,442 divisible by 6?