You've already been told it's not D.
Sub the numbers in for x and y.
What is the solution to the system? use elimination .
-18.6x+ 17.2y=90.2
14.2x+ 3.4y= -35.8
a.(3,2)
b.(-3,2)
c.(2/3,4/9)
d.(2,3)
IS IT D??
6 answers
what does sub the numbers mean ?? Please help.
@ms.sue
It means substitute the numbers for the unknown quantities.
-18.6x+ 17.2y=90.2
(-18x * 2) + (17.2 * 3) = 90.2
As another tutor told you, that doesn't work.
-18.6x+ 17.2y=90.2
(-18x * 2) + (17.2 * 3) = 90.2
As another tutor told you, that doesn't work.
thank you. so I did that and is it b ?
Yes. B is right.
3 answers