Explanation:
Given that ,
Mathematically we can write it as ,
Let k be the constant , therefore ,
Now when T = 400 and x = 625 , lets find the value of k , as ,
Therefore the required formula will be ,
Answer:
(a) T = 16√x
T is directly proportional to √x, so we can say,
T=k√x (where k is a constant)
now, according to the question,
400=k×√625
400=k×25
k=16
so, putting the value of k in the equation, T=16√x
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