15-3b=63
subtract 15 from both sides
-3b=48
divide -3 from both sides
b= -16
Answer:
b
Step-by-step explanation:
7/8 is a answer of this question
Average speed = (distance covered in some time) / (time to cover the distance)
4 hours 45 minutes = 4-3/4 hours = 4.75 hours
Average speed = (3,800 km) / (4.75 hours) = 800 km/hr
I'm pretty sure the answer is .0633 but I'm not sure
