The height of the telephone pole = 9 / 1.5 = 6 meters
Simplifying the expression (x - 2y) + (3x + 4y).
Work:
(x - 2y) + (3x + 4y)
Combine like terms.
x + 3x = 4x
-2y + 4y = 2y
Reform the expression.
4x + 2y
Simplified Expression: 4x + 2y.
Speed = distance/time
So speed = 40/10
= 4m/s