down voteaccepted
P(X=1) = 0.09
P(X < 5) = 0.09 + 0.36
P(X >= 2) = .36 + .23 + .09 + .23
P(2 <= X <= 7) = .36 + .23
I think it's 25 because you just have to subtitute f with 77 so 77 minus 32 and you get 45. then 5 time 45 divided by 9. so it's 25
Answer: 22
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If we must go through town B, then there are 20 ways to do this because of the 5 roads from A to B, then 4 roads from B to C. So 5*4 = 20.
If we go straight from A to C (not going through B), then there are 2 additional options making 20+2 = 22 total routes possible
Answer:
A) 10,560 ft. B) 32 more laps.
Step-by-step explanation:
A) Four laps around a track is equal to one mile, and there are 5,280 feet in one mile. If Roger ran eight laps, he ran two miles. Therefore: 5,280 ft. times 2, is equal to 10,560 ft.
B) We know that Roger ran two miles Monday. We also know that four laps around a track is equal to one mile. In order to run 10 miles, he would have to run 40 laps, and since he already ran 8, we can subtract that from 40. You are left with 32 more laps.
Subtract tips from total:
87.05 - 50.25 = 36.80
Divide the remainder by 4.60:
36.80 / 4.60 = 8
She worked 8 hours.