SOLUTION: Write and or solve the system of equations using any method.
.2x-.5y=-3.8
.3x+.4y=10.4
Thanks in advance!
Algebra.Com
Question 578490: Write and or solve the system of equations using any method.
.2x-.5y=-3.8
.3x+.4y=10.4
Thanks in advance!
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
0.20 x -0.50 y = -3.80 .............1
0.30 x + 0.40 y = 10.40 .............2
Eliminate y
multiply (1)by 0.4
Multiply (2) by 0.5
0.08 x -0.20 y = -1.52
0.15 x + 0.2 y = 5.20
Add the two equations
0.23 x = 3.68
/ 0.23
x = 16
plug value of x in (1)
0.2 x -0.5 y = -3.8
3.2 -0.5 y = -3.8
-0.5 y = -3.8 -3.2
-0.5 y = -7
y = 14
RELATED QUESTIONS
Solve the system using the substitution method. Show all your steps.
1. x+2y=6... (answered by checkley79)
solve the system of equations using the addition method
2x-3y=4... (answered by checkley77)
Please help!!! I don't understand any of this. Any assistance you can provide will be... (answered by funmath)
Can you please help me with these two problems I would appreciate it.
Solve each... (answered by stanbon)
solve each system of equations by using the substitution method.
{3x + 4y = 18
{ (answered by Edwin McCravy)
Solve the system of 2 equations and 2 unknowns using the echelon method.
-4x - 5y = 15
(answered by Cromlix)
What is the slope m and y-intercept point of the line y = 2x + 1?
slope m = 2... (answered by oberobic)
CRAMER RULE, ELIMIATION OR SUBSTITUTION METHOD, AND MATRICES PRACTICE PROBLEMS
1. (answered by richard1234)
Solve this system of equations using any method.
3x – y = 4
2x + y =... (answered by TimothyLamb)