The height above ground level in metres of a missile launch vertically, is given by h(t)=-16t³+100t at what time is the missile 72m above?

15 answers

solve for t in
-16t^3 + 100t = 72
-16t^3 + 100t - 72 = 0
-4(t-2)(4t^2+8t-9) = 0
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The height above ground level in metres of a missile launch vertically, is given by h(t)=-16t³+100t at what time is the missile 72m above?
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Ere bedenb rejim formual plz?
-16t^3+100t=72
-16t^3+100t_72=t
t=_4(t_2)(4t^2+8t_9)=0
answer with explaniation
The height above ground level in metres of a missile launch vertically, is given by h(t)=-16t³+100t at what time is the missile 72m above?
-16t^3+100t=72
-16t^3+100t_72=t
t=_4(t_2)(4t^2+8t_9)=0 then divide both sides by -4
(t-2)(4t^2+8t-9)=0
t=2or 👆=0 and since the answer of the quadratic equation is irrational number the answer is just 2.