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anonymous
 one year ago
A ball is thrown from an initial height of 1 meter with an initial upward velocity of 25/ms.The ball's height h (in meters) after t seconds is given by the following. h=1+25t5t^2 Find all values of t for which the ball's height is 6 meters.
Round your answer(s) to the nearest hundredth.
anonymous
 one year ago
A ball is thrown from an initial height of 1 meter with an initial upward velocity of 25/ms.The ball's height h (in meters) after t seconds is given by the following. h=1+25t5t^2 Find all values of t for which the ball's height is 6 meters. Round your answer(s) to the nearest hundredth.

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Koikkara
 one year ago
Best ResponseYou've already chosen the best response.0@kamelish Can you draw the picture and write down the given data, like \(h=?\) etc ...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it wont let me @Koikkara

phi
 one year ago
Best ResponseYou've already chosen the best response.1\[ h=1+25t52t^2 \] ball's height is 6 . That means h is 6. \[ 6 = 1+25t52t^2 \] put that in standard form \[ 52t^2 +25t 5=0 \] It looks like we should use the quadratic formula to solve for t do you know the quadratic formula?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0its 5t^2 i made a mistake @phi

phi
 one year ago
Best ResponseYou've already chosen the best response.1that's good, a much nicer number \[ 5t^2 +25t+1=6 \\ 5t^2 + 25t 5= 0 \] divide both sides by 5 (to simplify the equation a little bit) \[ t^2 5t+1=0\] but you still need to use the quadratic formula. Do you know it ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know it a little bit @phi

phi
 one year ago
Best ResponseYou've already chosen the best response.1Do you have time to see this https://www.khanacademy.org/math/algebra2/polynomialandrational/quad_formula_tutorial/v/usingthequadraticformula It is pretty good.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0t=4.79 or t=0.20? @phi

phi
 one year ago
Best ResponseYou've already chosen the best response.1if you have multiple choice, you can test each answer in the original formula \[ 1+25t5t^2 = 6 \] and see if you get 6 for the lefthand side
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