The function f(t) = -3t^2 + 18t + 21 models the approximate height of an object t seconds after it is launched. How many seconds does it take the object hit the ground ( please help !!! )

Classify the following triangle check all that apply

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

The first side of a triangle measures 5 in less than the second side, the third side is 3 in more than the first side, and the perimeter is 17 in. how long is the third side? if s represents the length of the second side, which of the following represents the length of the third side? s-5 ws-2 s+ 3 next question ask for turn it in