SOLUTION: I could really use some help on how to solve the following equation for t: {{{ h=-81t^2+at+c }}}

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Question 706862: I could really use some help on how to solve the following equation for t:


Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
That is an equation already solved for h. What are you looking for? It appears to be a quadratic equation with the variable, t. You can solve for t. You would treat just t as the only variable, and put the equation into the typical, "=0" form, and use general solution for a quadratic equation:





Your solutions for t are these:

OR


You might then take, for example the "+" form, as the simpler looking:

and the "-" form, as:


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