Answer:
x = -6
Step-by-step explanation:
y = -x equation 1
x + 6y = 30 equation 2
using equation 1 in equation 2 we have:
x + 6(-x) = 30
x - 6x =30
-5x = 30
x= -30/5
x= -6
It would be 33.33 because you have no change 50 into a fraction and divide that by 2/3

The left sides of the equations are the same and the right sides of the equations are different, therefore the system of equations is inconsistent.
Answer: B. inconsistent.
I'm assuming you mean which one is written properly? It would be either 3 x 10^4 or 6 x 10^4.
Hope it helps!
Answer:
$15.88
Step-by-step explanation:
19.99X0.25 = 4.9975
4.9975~5.00
19.99- 5.00
14.99X0.06~ 0.89
14.99+0.89
15.88