41. an honest coin is tossed 10 times in a row. find the probabil- ity of each of the following events. (hint: do exercise 15 first.) (a) e: "none of the tosses comes up tails." (b) ez: “exactly one of the 10 tosses comes up tails.” (c) e3: "nine or more of the tosses come up tails."

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality