75a + 25b = ___a+b)
A 25 (3a +b)
B 3 (25a +b)
C 25( a + b)
D 3(25ab)

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

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.

The blue segment below is a diameter of o. what is the length of the radius of the circle?