Ms. gomez flies 876 miles round trip
to visit her parents. what is the total
distance in miles that she would fly for
12 visits to her parents' house? below
is her work to find the total distance in
miles. what is the missing number? enter
your answer in the box.
8 7 6
x 1 2
1 7 5 2
8 ] 6 o
1 0 5 1 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.