When a quarter is tossed four times, 16 outcomes are possible. hhht hhth hhtt hthh htht htth httt thhh thht thth thtt tthh ttht ttth here, for example, htth represents the outcome that the first toss is heads, the next two tosses are tails, and the fourth toss is heads. the events a and b are defined as follows. a = event exactly two tails are tossed b = event the first and last tosses are the same list the outcomes that comprise the event (a or b)?

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer