Each X and Y in the equations don't have a number in front of them so they are all considered 1.
D = 1*(-1) - 1*(-1) = -1 -1 = -2
The answer is -2
Answer:
EF = 58
Step-by-step explanation:
Starting with the premise that
DF = DE + EF, then
9x - 39 = 47 + 3x + 10 ( subtract 3x from both sides )
6x - 39 = 57 ( add 39 to both sides )
6x = 96 ( divide both sides by 6 )
x = 16
Hence
EF = 3x + 10 = (3 × 16) + 10 = 48 + 10 = 58
I think it is 3 but i'm not sure<span />
Answer:
*helps*
Step-by-step explanation:
need anymore help?
The answer is
$2,939 (see attachment for formula)
