8a+4s=840
a=s+30
8(s+30)+4s=840
12s+240=840
12s=600
s=50
A=s+30
a=50+30
a=80
The drama play sold 80 adult tickets
1x - 1y + 2z = -3 → 1x - 1y + 2z = -3 → 2x - 2y + 4z = -6
2x + 2y - 1z = -3 → 2x + 2y - 1z = -3 → 2x + 2y - 1z = -3
3x + 2y + 0z = 8 4x + 3z = -9
1x - 1y + 2z = -3
2x + 2y - 1z = -3 → 2x + 2y - 1z = -3 → -2x - 2y + 1z = 3
3x + 2y + 0z = 8 → 3x + 2y + 0z = 8 → 3x + 2y + 0z = 8
x + z = 11
4x + 3z = -9 → 4x + 3z = -9
1x + 1z = 11 → 4x + 4z = 44
-z = -53
-1 -1
z = 53
x + z = 11
x + 53 = 11
- 53 - 53
x = -42
3x + 2y = 8
3(-42) + 2y = 8
-126 + 2y = 8
+ 126 + 126
2y = 134
2 2
y = 67
(x, y, z) = (-42, 67, 53)
The answer is B.
12:12 would be an even ratio of 1:1 but since you have a ratio of 1:2 you would take away half of the action movies and add it to the other category so the ratio would be 6:18 (1:2 if reduced) meaning 6 action films would be shown.
![(3x - 5) + ( {x}^{2} + 1) \\ 3x - 5 + {x}^{2} + 1 \\ {x}^{2} + 3x - 4](https://tex.z-dn.net/?f=%283x%20-%205%29%20%2B%20%28%20%7Bx%7D%5E%7B2%7D%20%20%2B%201%29%20%5C%5C%203x%20-%205%20%2B%20%20%7Bx%7D%5E%7B2%7D%20%20%2B%201%20%5C%5C%20%20%7Bx%7D%5E%7B2%7D%20%20%2B%203x%20-%204)
Therefore the answer is x²+3x-4
Step-by-step explanation:
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