The event that either M1 or M2 fails has probability

by the addition rule. Failure events are independent, so

so that

Denote this probability by
. Then
follows a geometric distribution with this parameter
and has density

The expectation is
.
There are to be exact only 2 ways to answer this equation because of the way math was made.
Answer:
Step-by-step explanation:
I think its substitution
2.5kg is 2,500g
2,500g/500g= 5
Cook time= (30minutes*5) + 20 minutes
170 minutes
Answer:
it would be point A if there is a point A