Answer:
B
C
Step-by-step explanation:
B= one question equals one minute
C= one minute equals one question
Step-by-step explanation:
-2x - 10 = 14x - 7
-10 + 7 = 14x +2x
-3 = 16x
-3/16 =x
Answer: (-4) and 4
Step-by-step explanation: they are opposites
X=29, y=19
29+19=48
29-19=10
Answer:
See below.
Step-by-step explanation:
Let “x” be a coach ticket.
Let “y” be a first class ticket.
Let’s set up a system of equations.
120x + 990y = 3210
x + y = 5
120x = 3210 - 990y
x = 26.75 - 8.25y
26.75 - 8.25y + y = 5
- 7.25y = -21.75
y = 3
120x + 990 * 3 = 3210
120x = 240
x = 2
She bought 2 coach tickets and 3 first class tickets.