2024 September(H11) Math Question 16
Quadratic Equations
- solve-quadratic-equations
Substitute t=6t = 6t=6 into h(t)=−4.9t2+49t+980h(t) = -4.9t^2 + 49t + 980h(t)=−4.9t2+49t+980:
h(6)=−4.9(6)2+49(6)+980h(6) = -4.9(6)^2 + 49(6) + 980h(6)=−4.9(6)2+49(6)+980
=−4.9(36)+294+980= -4.9(36) + 294 + 980=−4.9(36)+294+980
=−176.4+294+980= -176.4 + 294 + 980=−176.4+294+980
=1,097.6 meters= 1,097.6 \text{ meters}=1,097.6 meters
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