The average score on a test taken by 200 students is 80 and standard deviation is 10. if each student's score is increased by 5, what would be the new mean and standard deviation

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Anyone know? will mark brainliest if correct!

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need