Answer:
Step-by-step explanation:
45h + 75 = 210
45h = 135
h = 3 hours
If I'm right x= -25
6ab(2a-3b-5b²)
6(2a²b-3ab²-5ab³)
6a(2ab-3b²-5b³)
72 km/hour
20 m/s × (1 km/(1000 m)) × (3600 s/h) = 72 km/h
The rate is 72 kilometers per hour.
