If \( 7b - \frac{1}{4b} = 7 \) then what is the value of \( 16b^2 + \frac{1}{49b^2} \) ?
In the given figure, PAB is a secant and PT is a tangent to the circle from P. If PT=8cm, PA=6cm, AB=x cm, then find the value of x
The following chart represents the gross amount (in lakhs) and total cost (in lakhs) of a firm.
In order to make a profit of 25%, what should the gross amount have been (in crores) in 2019-2020, if the total cost remained the same?