PLEASE HELP. i really need this grade so please be right. POSTING FOR 20 POINTS!! thanks so much lovess :)

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

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73

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.