The playing time X of classical CDs has the normal distribution with mean 54 and standard deviation 5. What percent of classical CDs have playing time between 44 and 54 minutes

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.

they would have to work 32 hours.