Andrea is learning how to jump rope. she made 14 jumps the first day, 21 jumps the second day, and 28 jumps on the third day. if this pattern continues, how many jumps will she be making on the nineteenth day?

What is the quadric regression equation that fits these data

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.

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie