Question

Solve for x then calculate xy:
3x+4y=23
4x-3y=14

a. xy= -6
b. xy= 10
c. xy= 9
d. xy= 24
e. none of the above

Answer 1

how fast you need it?

Answer 2

i'm getting C for my answer. @satellite73 i'm just trying to do some practice work as extra study for an upcoming exam. whenever is okay.

Answer 3

If you need it fast, @satellite73 is the perfect dewd for you ;3

Answer 4

Though there have been rumors that @satellite73 is a girl c;

Answer 5

for once it is NOT C
(amazing)

Answer 6

\[3x+4y=23\\ 4x-3y=14\] multiply the first equation 3, the second by 4 and the y terms will drop out
\[9x+12y=69\\
16x-12y=56\] add and get
\[25x=125\]making \(x=5\)

Answer 7

Interesting concept @satellite73