Answer:I believe it's 31,771
Step-by-step explanation: you first need to add 8,999 + 2,387 to get 11,386 then add 11,386 + 11,386 to get 22,772 and then add 8,999 to get 31,771.
Assume an x-value, substitute it in the equation where you find "x" and solve to find y
x = 0
y = -18
x = 1
y = -14
x = 2
y = -8
x = 3
y = 0
x = 4
y = 10
B = 0.5A + 30
C = 1.5A + 20
If B = C, that means we can set the two equations equal to each other.
0.5A + 30 = 1.5A + 20
A = 10... Plug that into one of the equations to find B or C (they are the same)..
B = 0.5 * 10 + 30 = 35
35 + 35 + 10 = 80 total.
Answer:
x = -3
y = 6
z = -5
Step-by-step explanation:
A) x + y + 2z = -7
B) -5z = 25
C) 3x - 3y - 6z = 3
B) -5z = 25
z = 25/-5
(z = -5)
A) x + y + 2(-5) = -7
x + y = -7 + 10
x + y = 3
(x = 3 - y)
C) 3x - 3y + 6(-5) = 3
3x - 3y + 30 = 3
3x - 3y = -30-3
3x - 3y = - 27
C) 3 (3-y) - 3y + 30 = 3
9 - 3y - 3y+ 30 = 3
-6y + 39 = 3
-6y = -39 + 3
y = -36/-6
(y = 6)
x + 6 = 3
x = 3 -6
(x = -3)
