The range of the data is 93
Answer:
38.60 mph
Step-by-step explanation:
Average speed = total distance / total time
44 mph = (70 mi + 60 mi) / t
t = 2.95 hr
The time spent during the first 70 miles is:
d = rt
70 mi = (50 mph) t
t = 1.4 hr
So the time spent during the last 60 miles is:
t = 2.95 hr − 1.4 hr
t = 1.55 hr
So the average speed during the last 60 miles is:
d = rt
60 mi = r (1.55 hr)
r = 38.60 mph
You do 150/6 = 500/x
150x = 3000
Means x = 20
2 6/7 = 2 12/14
1/2 = 7/14
12/14 - 7/14 = 5/14
Answer: 2 5/14
Let me know if you need a better explanation.
Answer:
x=-2
Step-by-step explanation: I gotchu
1. You first apply the -3 to (3x-2) which makes the equation -9x+6=24
2. Then, to isolate "-9x", you subtract 6 from both sides to make the equation -9x=18
3. Lastly, to isolate "x", you divide both sides by -9 which would make x=-2
