Me with 13-20 but i need with 13-18 to find x because its hard for me and 19-20 to find bc and find triangle pqr

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.

Use the balanced scale to find the conversion factor that can be used to convert the number of blocks to the weight of the blocks in pounds.

Use the law of sines to find the length of side c. a. 29.37 b. 38.06 c. 25 d. 21.28 this is geometry on apex