Need help! What are the coordinates of point P?

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

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