dan eric and frank are the leading scorers on their basketball team. over the course of their high school careers, dan scored 6/10 of the points that the three boys scored. if eric scored 7/10 of the remaining points and frank scored 120 points, how many points did dan score? use a bar graph to help you

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.