PLEASE HELP GEOMETRY NEED IN 10 MINS!!

1. If P(F^c)=6/7, then P(F)=
A 3/7
B 1/7
C 6/7
D 1

2. If P(B^c)=3/8, then P(B)=
A 1
B 3/4
C 5/8
D 3/8

3. If P(D)=0.43, then P(D^c)=??
A 0.21
B 1
C 0.57
D 0.43

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?