sub007 sub007
  • 29-11-2016
  • Mathematics
contestada

Solving using substitution and/or elimination method -5x+6y=-8 ; x-4y=24

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 29-11-2016
hmm
we can solve for xin second equation

add 4y both sides
x=24+4y
sub 24+4y for x in other equation


-5(24+4y)+6y=-8
-120-20y+6y=-8
-120-14y=-8
add 120 both sides
-14y=112
divide bot sides by -14
y=-8

sub back

x=24+4y
x=24+4(-8)
x=24-32
x=-8

answer is
(x,y)
(-8,-8)
Answer Link

Otras preguntas

How is a person counted as unemployed? a.the person must have work lined up for the future or be actively searching for a job. b.the person has held a job for
Determine the sum of: −10y2+(−3y2)−4y2−(−6y2) the 2 are squared
The elevation of a sunken ship is -120 feet your elevation is 5/8 of the ships elevation what is your elevation?
which type of injury can be treated using the RICE produre?A. bone fracture B. ligament tearsC. minor strains and sprainD. muscle cramps
An orange grower has 400 crates of friut ready for market and will have 20 more for each day the growers waits. The present price is $60 per crate and will drop
How might the outcome of the French and Indian war affect relations between the colonists and England
if the ribbon cost $0.10 per foot what is the total cost of the ribbon in dollars
a=444 b=213. 4÷a×b= can you help me plz
Dentro de las culturas pre incas, la cultura matriz fue
How are exponential growth and decay present in the real world? Give at least 2 examples for exponential growth and 2 examples of exponential decay.