Answer:
138
Step-by-step explanation:
Answer:
100
Step-by-step explanation:
Answer:

And replacing we got:

The probability that a randomly selected barber needs at least 14 minutes to complete the haircut is 0.5714
Step-by-step explanation:
We define the random variable of interest as x " time it takes a barber to complete a haircuts" and we know that the distribution for X is given by:

And for this case we want to find the following probability:

We can find this probability using the complement rule and the cumulative distribution function given by:

Using this formula we got:

And replacing we got:

The probability that a randomly selected barber needs at least 14 minutes to complete the haircut is 0.5714
Answer:
16 and 19
Step-by-step explanation:
16 + 19 = 35
16 x 5 = 80
19 x 4 =76
80 is four less than 76 so therefore the answers are 16 and 19.
Answer:

Step-by-step explanation:
Given

Required
The surface area
This is calculated as:

So:



