Acommittee of 8 people needs to identify a chairperson, a vice chairperson, and a secretary. in how many ways can this be done if no one person can serve in more than one capacity?

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

What is the answer to this problem? ignore the work. what is the correct answer?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).