Achild rolls a ball on a level floor 3.6 m to another child. if the ball makes 18.0 revolutions, what is its diameter?

After two years, how much has been paid into interest?

How are sas and sss used to show that two triangles are congruent?

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.