M(5, 7) is the midpoint of rs the coordinates of s are (6, 9). what are the coordinates of r?
(5.5, 8)

(7, 11)

(10, 14)

(4, 5)

Sketch one cycle if the cosine function y=2cos2theta

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Joanie watched 1 out of three of a movie in the morning