Is -3.45 closer to -3 or -4 on a number line please i really need help

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

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee