Consider the line plot below.

What is the median of the data?

What is the mean?

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.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?