The bias of a coin (i. e., the probability of Heads) can take three possible values, 1/4 , 1/2 , or 3/4 , and is modeled as a discrete random variable Q with PMF pQ(q)=⎧⎩⎨⎪⎪⎪⎪⎪⎪1/6,2/6,3/6,0,if q=1/4,if q=2/4,if q=3/4,otherwise. Let K be the total number of Heads in two independent tosses of the coin. Find pQ|K(3/4|2) .

because they could drop even lower..

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