alyssakadas
alyssakadas alyssakadas
  • 13-02-2017
  • Mathematics
contestada

solving system of equations by substitution

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 13-02-2017
y=3x-10 and 3x+2y=16
y=3x-10
subsitute 3x-10 for y in other equation

3x+2y=16
3x+2(3x-10)=16
distribute
3x+6x-20=16
9x-20=16
add 20 both sides
9x=36
divide both sides by 9
x=4

sub back

y=3x-10
y=3(4)-10
y=12-10
y=2

x=4
y=2
(4,2) is soluiton
Answer Link

Otras preguntas

the tendency of a mineral to break along a smooth, flat surface
(Avma) represents a policy statement issued
How many gallons equal to 8 quarts
What is the world's shortest river?
A cell in the human nervous system whose primary function is to provide insulation and structure for neurons on which they may develop and work is called a(n) _
a 125 ml flask and stopper has a mass of 55.263 g. a 25.00 ml sample of gasoline is pipetted into the flask. the final mass is 73.385g. what is the density of t
What drove the colonists to want independence from britain??
What factor influenced napoleons decision to sell the Louisiana territory to the United States?
what percentage of people choose baseball or soccer as their favorite sport there is a circle 25% play basketball 35% play football 20% play baseball 15% play s
Math Question, Please help.