If y varies directly as the square root of x and y = 3 when x = 16. Calculate y when x = 64
If x * y = x + y\(^2\), find then value of (2*3)*5
If p and q are two non zero numbers and 18(p+q) = (18+p)q, which of the following must be true?
If \(\begin{vmatrix} x & 3 \\ 2 & 7 \end{vmatrix} = 15\), find the value of x
