Answer:
S = 
Step-by-step explanation:

(-30 km/h) -(45 km/h) = -75 km/h . . . . . east is positive here
The velocity changed 75 km/h to the west.
It is not because the figure only has 2 hexagons (top and bottom) but the net has 3. So, your answer is NO.
Answer:
3m-7=15
3m=15+7
3m=22
m=22/3
here's the answer
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