I don’t get this question I’m stuck on it can someone help me please

Acoin is tossed twice. let e e be the event "the first toss shows heads" and f f the event "the second toss shows heads". (a) are the events e e and f f independent? input yes or no here: yes (b) find the probability of showing heads on both toss. input your answer here: preview

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?