The diameter of the sun is about is about 1 390 000 km; use scientific
notation to represent this diameter.

Is it greater than or less than7*3_9*2

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.

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i