SOLUTION: Help please I don't understand
0.5x + 0.4y = -1
0.3x + 0.6y = -0.6
Algebra.Com
Question 96283: Help please I don't understand
0.5x + 0.4y = -1
0.3x + 0.6y = -0.6
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
.5X+.4Y=-1 MULTIPLY THIS EQUATION BY -.3 (-.15X+.12Y=.3)
.3X+.6Y=-.6 MULTIPLY THE SECOND EQUATION BY .5 (.15X+.3Y=-.3) NOW ADD THESE 2 EQUATIONS.
-.15X+.12Y=.3
.15X+.3Y=-.3
-----------------------------
.42Y=0
Y=0 ANSWER.
.5X+.4*0=-1
.5X=-1
X=-1/.5
X=-2 ANSWER.
PROOF
.3*-2+.6*0=-.6
-.6=-.6
RELATED QUESTIONS
Solve 5x – 6y = –38
3x + 4y = 0
Please show... (answered by 56592526)
(3x+4y) - (2+6y)... (answered by ReadingBoosters)
x= P(x) =
0 0.68
1 0.2
2 0.06
3 (answered by Boreal,math_tutor2020)
determine whether the following equations represent a parabola, circle, ellipse or... (answered by Alan3354)
Graphs/81664 (2007-05-11 11:05:43): I can't seem to fully understand how to get through... (answered by jim_thompson5910)
Please help with this problem solving by substitution:
3x + 4y = 8
4.5x + 6y = 12... (answered by stanbon)
I dont understand how I should solve these by factoring; x^2-5x+6=0, 2x^2-9x-5=0,... (answered by mangopeeler07)
1. Determine whether the following equations have a solution or not? Justify your answer. (answered by Alan3354)
I can't seem to fully understand how to get through the whole process to the answer.... (answered by rapaljer)
I can't seem to fully understand how to get through the whole process to the answer.... (answered by Edwin McCravy)