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H=39t-5t2 find all the values of t for which the rockets hight is 22 meters
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H=39t-5t2 find all the values of t for which the rockets hight is 22 meters

User Qurban
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I believe that for this question you will use the quadratic equation which is: (-b +/- sqrt(b^2-4(a)(c))/2a   Plug in -5=a, 39=b, 22=c and that should give you 2 answers for t.  
User Vahid Kharazi
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