The term that best describes a proof in which you assume the opposite of what you want to prove is proof of contradiction. Contradiction means opposite.
Your answer is: C) Proof of Contradiction
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You divide one by 1/8 to get the first answer.
It is obvious there are 8 pieces of eight in one whole.
Now to get the amount of eights in three wholes, multiply how much is in one whole by 3 to get 2.
Angle 4 will be 54°
because angle 3 and angle 5 will add to equal 180. from that we find x=18. angle 4 and and 5 and the same so 3(18) equals 54
Key word here, "or"...so you would add the unique probabilities of either together...
P(e)=1/2, P(>4)=3/10 (the numerator is three rather than five because 2 and 4 were already accounted for in P(e)...
P=5/10+3/10=8/10=4/5 (80%)
P=0.8
