Rearranging Formulas Practice Questions

Make $b$ the subject of the formula.

Make $m$ the subject of the formula.

Use your answer to part (a) to work out the value of $m$ when $E=48$ and $v=4$.

Make $a$ the subject of the formula
$$b=\frac{5}{a}+2$$

Make $w$ the subject of the formula
$$P=\frac{4w+3}{2w-1}$$

Make $r$ the subject of the formula.

A solid sphere has a volume of $500\,\mathrm{cm}^3$.

Work out the radius of the sphere.
Give your answer correct to 3 significant figures.

Make $x$ the subject of the formula
$$y=5\sqrt{x}-2$$

Show that $v=\dfrac{uf}{u-f}$.

Hence work out the value of $v$ when $u=15$ and $f=6$.