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?

Given: ab ≅ cd and ad ≅ bc prove: abcd is a parallelogram. statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3? triangle angle sum theorem sas congruency theorem sss congruency theorem cpctc