Awater has a height of 700 feet . A pebble is thrown upward from the top of the falls with an initial velocity of 20 per second. The height of the pebble hin foet ufort seconds is given by the equations h= -16t^2+20t+700. How long after The pebble is thrown with the ground?
The time takes for the pebble to hit the ground is about ___
(Simply your answer. Type airger or decimal rounded to the nearest ton as needed)

step-by-step explanation:

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i think it is 70

step-by-step explanation:

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

well what you have to do is divide 84 by 6 so theanswer

step-by-step explanation:

84 divided by 6 = 14

and that lightbulb changing party must be freaking lit!