Sam1300 Sam1300

02-03-2015
Mathematics

contestada

X+3y=5
-2x-6y=-10

Solve using elimination

Respuesta :

apologiabiology apologiabiology

02-03-2015

slimination
multiply first equaiton by 2
2x+6y=10
add to second equiaotn
2x-2x+6y-6y=10-10
0=0
this is true so therfor they are the same equaiton

so solve
x+3y=5
3y=-x+5
y=-1/3x+5/3

subsituter values for x and get valuse for y

if x=2 then y=1

Answer Link

Otras preguntas

A student government organization is selling Christmas trees as a fundraiser. On Friday, they sold 5 noble fir trees and 3 douglas fir trees for a total of $420

The Earth has four main seasons: winter, spring, summer, and fall. Which of the following is a cause of seasonal changes on Earth? The Earth rotates. The

Angie takes a random sample of 100 students in her school and finds that 58% of the sample prefers art over music. There are 1,200 students in the school. Based

Simplify. (-1/2)(4times)(-2)(7y)(-1) A. –28xy B. –28 C. 28xy D. 27

can someone help me solve this and show me the work? it says solve and graph the compound inequality -8<2x+4<10

EASY SCALE FACTOR SHOW WORK

Which body tissue or organ contains the most mitochondria?

Is 5/7 greater than 4/6

Tu as quels cours le jeudi matin?

How do I do trebuchet calculations????? Help me please