Evaluate $\int{\sin 3xdx}$

The slope of the tangent to the curve $y=3{{x}^{2}}-2x+5$at the point (1,6) is

Find the derivative of y =sin²5x with respect to x 

If $\frac{dy}{dx}=2x-3$and y = 3 when x = 0. Find y in terms of x

A trader bought goats for N4,000 each. He sold them for N180,000at a loss of 25%. How many goats did he buy?

Evaluate $\frac{0.21\times 0.72\times 0.00054}{0.006\times 1.68\times 0.063}$ correct to four significant figures. 

Simplify ${{(\sqrt{0.7}+\sqrt{70})}^{2}}$

Simplify 52.4 – 5.7 – 3.45 – 1.75

In a school, 220 students offer Biology or Mathematics or both 125 offer Biology and 110 Mathematics. How many offer Biology but not Mathematics?

Without using tables evaluate ${{(343)}^{\tfrac{1}{2}}}\times {{(0.14)}^{-1}}\times {{(25)}^{-\tfrac{1}{2}}}$