SOLUTION: x+y=9.0 0.50x+.20y=3.75 With the given given problem, solve for the value of x and y. The answer I continue to get is x=4.3 and y=4.7 but it is wrong. Help please?

Question 643911: x+y=9.0
0.50x+.20y=3.75
With the given given problem, solve for the value of x and y.
The answer I continue to get is x=4.3 and y=4.7 but it is wrong. Help please?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
2.
From eq. 1,

Use this in eq. 2,

Now use the substitution again,

RELATED QUESTIONS
our teacher is wanting us to this problem: 3 1 1 7 1 3 -1 13 -2 1 0 -1... (answered by jim_thompson5910)

Evaluate and tabulate the values of y for the value(s) given. y = 2x3, for x = -3, 0, (answered by palanisamy)

In order to solve this word problem i need to use the following strategies: Maximum or... (answered by solver91311)

Hi all, Im having trouble with the following Function and Domain problem. I have already... (answered by stanbon)

apply the quadratic formula to find the roots of the given function, and then graph the... (answered by mananth)

solve the equation for y. then find the value of y for the given value of x: 6xy=12x;... (answered by MathLover1,checkley79)

Draw a graph of y=2x for x-values from 0 to 5 (< x > 5) could you please explain how... (answered by bucky)

Solve by completing the square. x^2 -14x +49 = 0 I came up with the answer of 7, 7 for... (answered by checkley75)

1.Write the equation of a line perpendicular to x-axis that passes (0,-2). 2.Given... (answered by solver91311)