Solve \(\frac{1}{3}\)(5 - 3x) < \(\frac{2}{5}\)(3 - 7x)

Solve the following equation: \(\frac{2}{(2r - 1)}\) - \(\frac{5}{3}\) =  \(\frac{1}{(r + 2)}\)

Correct 241.34(3 x 10\(^{-3}\))\(^2\) to 4 significant figures

Find the mean deviation of 1, 2, 3 and 4

Simplify and express in standard form \(\frac{0.00275 \times 0.00640}{0.025 \times 0.08}\)