When you are translating a number from scientific notation to standard form, what does the exponent tell you? a. the number of zeroes to add to the end of the original number b. the number of places to move the decimal point to the left c. the number of places to move the decimal point to the right d. the number of times to multiply the first factor by itself

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