Charlie reads quickly. he reads 1 3/7 pages every 2/3 minutes. charlie reads at a constant rate

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

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.

Use the distance formula to find the distance between (-3,5) and (3,1)