You cannot eliminate x and end up with two different equations.
5x+3y=9.. B
2x-4=40...A
Solve A for x.
2x - 4 = 40
2x = 40 + 4
2x = 44
x = 44/2
x = 22
The only thing I can think of doing is to plug 22 into B.
5(22) + 2y = 9
110 + 2y = 9...This leads to an answer for y.
No two NEW EQUATIONS is possible.
2y = 9 - 110
2y = -101
y = -101/2
Check your question again.
Answer:
48 square feet.
Step-by-step explanation:
The answer would be B. (12,-6) because you have to multiply 12 by 12 then 22 by -6 whjich would make the equation 144+-132 so then you subtract the two and you get your answer
$18.72
20% of $15.60 is $3.12
$15.60+$3.12=$18.72
If XZ=20 then half of that, XY = 10 so if XY is 10 that means YZ is 10, and WX is 10.