Answer:
2/9
Step-by-step explanation:
The probability of getting any letter once is 1/3
The probability of getting any combinations = 1/3 * 1/3 = 1/9
The probability of getting two of the combinations = 1/9 + 1/9 = 2/9
Im confused what is you question?
Answer: 20 km/h
Step-by-step explanation:
Speed = Distance / Time
Heon Train:
Translate minutes to hours:
90 minutes = 1.5 hours
= 120 / 1.5
= 80 km/h
Ami's Train
Train leaves at 11:25 and arrives at 15:10.
15:10 - 11:25 = 3hours 45 minutes
3 hours 45 minutes in minutes = (60 * 3) + 45 = 225 minutes
225 minutes in hours is = 225/60 = 3.75 hours
Speed of train = 375 / 3.75
= 100 km/h
Difference between average speeds:
= 100 - 80
= 20 km/h
The length of ND = 3 units
The length of N'D' = 6
6 / 3 = 2
The scale factor is 2