Table A only, because as the number goes up one in the x column the number in the y column adds 19 to the previous number
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.
Width = w
Length = 3w - 6
Area = 360
Equation Area = wl
w (3w-6) = 360
3w^2- 6w = 360
3w^2 - 6w - 360 = 0
3 (w^2 - 2w - 120)=0
3(w + 10)(w - 12) = 0
w = -10 & 12
l = 3w-6 = 3 (-10)-6= -30 - 6= -36
l = 3w-6 = 3(12) - 6 = 36-6 = 30
Answer: -10 and 12. Yet, since this is a measurement, it must be positive so 12 ft
Supplementary angle = 180 degrees
angle 1 = x
angle 2 = 3x (three times the supplementary)
3x + x = 180
4x = 180
x = 45 degrees
angle 1 = 45 degrees
angle 2 = 135 degrees