f a researcher were to subtract the mean of a distribution from each score in that distribution and add the differences, the resulting value would .

The anwser cause i do not understand just plez

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

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?