I NEED A-D ANSWERED PLEASE! 20 POINTS! A diver jumps off a diving board with an initial velocity of 4 m/s from a height of 5 m. The
equation h(t) = -4.9t^2+ 4t + 5 models the diver height in meters after t seconds.

a) About how many seconds does it take for the diver to land in the water?

b) What is the diver's height after 1 second?

c) How long does it take for the diver to reach the maximum height?

d) What is the diver's maximum height?

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.