In one day, a family in a car rode for 2 hours, stopped for 3 hours, and then rode for another 5 hours. during the day, the family traveled a total distance of 400 kilometers. what was their average speed for the whole trip

Complete the two-column proof. given: 5/x + 9 = 11 prove: x = 10 5/x + 9-11 select one: a. a. given b. subtraction property of equality c. division property of equality b. a. given b. subtraction property of equality c multiplication property of equality ca. given b. addition property of equality c. multiplication property of d. a. given b. addition property of equality c. division property of equality