During a hurricane, thousands of pine trees snapped off to form right triangles. suppose that for one such tree, the vertical distance from the base of the broken tree to the point of the break was 4.2 ft. the length of the broken part was 12.1 ft. how far along the ground was it from the base of the tree to the point where the broken part touched the ground? it is approximately ft or ft^2 from the base of the tree to the point where the broken part touches the ground.
(type an integer or decimal rounded to the nearest tenth as needed.)

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.

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.

Charlie tosses five coins.what is the probability that all five coins will land tails up.