Answer:
21 minutes
Step-by-step explanation:
Her expected commute time is given by the probability of having to wait for the train (0.2) multiplied by the commute time in this scenario (25 min), added to the probability of not having to wait for the train (1 - 0.2) multiplied by the commute time in this scenario (20 min). The expected commute time is:

Her expected commute time is 21 minutes.
Answer:
it would be A
Step-by-step explanation:
Answer:
2 19/72
Step-by-step explanation:
The scale factor for area is the square of the scale factor for linear dimensions. If linear dimensions are scaled up by a factor of 10, the area is scaled up by a factor of 10² = 100.
The area of the larger box is 100×432 cm² = 43,200 cm².
I think your answer could be 1 or 4 Hope this helps if it does mark me brainliest.