What is the area of this circle?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.