The mean of 2-t, 4+t, 3-2t, 2+t and t-1 is

Evaluate \(\frac{12.02 \times 20.06}{26.04 \times 60.06}\), correct to three significant figures.

If y = 2x³ + 6x² + 6x + 1, Find \(\frac{dy}{dx}\)

The nth term of the sequence 3, 9, 27, 81.....is

Simplify 1 - (\(\frac{1}{7}\) x 3 \(\frac{1}{2}\)) \(\div\) \(\frac{3}{4}\)