Some fireworks are fired vertically into the air from the ground at an initial velocity of 80 feet per second. The path of a firework is modeled by h(t) = -16t^2 + 80t. a) How long does it take for the firework to reach its maximum height?

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step-by-step explanation:

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

i think the answer is b.

step-by-step explanation:

not 100% sure though.

what are the statments

step-by-step explanation: