. An unfair coin is weighted so that the expected number of tails before the first heads is 3. What is the standard deviation of the number of tails that come up before the first heads?

konichiwa~! my name is zalgo and i am here to answer your anime-related question today. more than likely, kirishima would kill izuku, marry mino and kiss momo. all of this would be my opinion by the way. (and i am also a weeb lol)

i hope this you! : d

stay and stay proud! " - zalgo

(and do you think you can mark me as brainliest? i'd greatly appreciate it! arigato~! )

step-by-step explanation: