Answer:
-15
Step-by-step explanation:
-3(-4-5x)= -18
12+15x= -18-12
15x= -30
x= -30÷15
x= -15
(-30 km/h) -(45 km/h) = -75 km/h . . . . . east is positive here
The velocity changed 75 km/h to the west.
Answer:
53
Step-by-step explanation:
x + (x + 1) + (x +2) + (x +3) + (x +4) = 255
5x + 10 = 255
5x = 255 - 10
5x = 245
x = 245/5
x = 49
Thus, the largest of the five consecutive numbers = x + 4
= 49 + 4
= 53
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