Question 13 of 20 Martina is a skydiver. She jumps out of a plane and free-falls for almost 80 seconds, reaching a terminal velocity. Then she opens her
parachute and slows down, reaching another terminal velocity. Finally, she lands. The graph of her velocity (in meters per second) over
the time (in seconds) of her dive is sketched,

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

In an equilateral triangle, each angle is represented by 5y+3. what is the value of y? a. 9.7 b. 10.8 c. 11.4 d. 7.2