Point D is the center of the given circle. What is the measure of Ac? A. 24°
469
B. 96°
0
C. 84°
D. 48°

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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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