Which algebraic expression represents this phase the product of 34 and the number of pounds

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

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.

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x