Answer:

And we want to find the following probability:

And for this case we can use the cumulative distribution given by:

And for this case if we use this formula and the complement rule we have:

Step-by-step explanation:
Let X the random variable who represent the pizza delivery time and we know that the distribution for x is given by:

And we want to find the following probability:

And for this case we can use the cumulative distribution given by:

And for this case if we use this formula and the complement rule we have:

Answer:
32+48
Step-by-step explanation:
80- 32= 48
80-48= 32
Well...The sum of those radicals is 7 root 2 and that is a imperfect square root so this is irrational
Answer:
4.14
Step-by-step explanation:
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