find the surface area of the rectangular pyramid shown include all faces in your calculations 8cm 8cm 10cm 9cm

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

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.