Question
Bahasa Melayu
Tinggi, h meter, sebiji bola yang dibaling ke atas dimodelkan oleh h = -5t^2 + 20t, dengan keadaan t ialah masa dalam saat. Cari tinggi bola itu apabila t = 2 saat.
English
The height, h metres, of a ball thrown upwards is modelled by h = -5t^2 + 20t, where t is the time in seconds. Find the height of the ball when t = 2 seconds.
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