Help me please!! 17. Use the following formulas to answer questions 17 - 19
Find the distance between the points (-3, 8) and D (5,5). Round your answer to the nearest tenth. Be sure to show all of your work!

18. Find the coordinates of the midpoint M of the segment joining H (2,-1) and K (-3, 8). Be sure to show all of your work!

19. The coordinates of the midpoint of Segment AC are
(2, -3). The coordinates of A are (0, 5). Find the coordinates of C. be sure to show all of your work!

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.