ALGEBRAIC FORMULAE

Given

 $\frac{2}{\sqrt{n}-5}=3$  , express n in terms of p.

•  $n=\left(2p+15\right)^2$  

•  $n=4p^2+225$  

•  $n=\left(\frac{2p}{3}+5\right)^2$  

•  $n=\left(\frac{2p}{3}\right)^2+5$  

Given that

 $\frac{4m^2+3p}{3}=2\left(5-2p\right)$  , express p in terms of m.

•  $p=\frac{2+m^2}{15}$  

•  $p=\frac{15-2m^2}{15}$  

•  $p=\frac{30+4m^2}{15}$  

•  $p=\frac{30-4m^2}{15}$  

Given

 $5p=\frac{m\left(p-3\right)}{m-2}$  , express m in terms of p.

•  $m=\frac{10p}{4p+3}$  

•  $m=\frac{10p}{4p-3}$  

•  $m=\frac{10p}{6p+3}$  

•  $m=\frac{10p}{6p-3}$  

Given that

 $\frac{p-5r^2}{3}=4\left(3p-2\right)$  , express r in terms of p.

•  $r=\sqrt{\frac{24-35p}{5}}$  

•  $r=\sqrt{\frac{35p-24}{5}}$  

•  $r=\frac{24-35p}{5}$  

•  $r=\frac{35p-24}{5}$  

The price of a pen is RM x and the price of a shirt is RM y. The total price of items that Amal needs to pay is RM 260. write the equation for the price of the shirts in terms of the price of the pens.

• $y=2x-20$

• $y=20-2x$

• $y=2x-20$

• $y=10+2x$

Given that

 $q=2\left(h+k\right)$  , express k in terms of h and q.

•  $k=\frac{2h-q}{2}$  

•  $k=\frac{q-2h}{2}$  

•  $k=2\left(q-2h\right)$  

•  $k=2\left(2h-q\right)$  

Given

 $m=\frac{3-k}{2k}$  , express k in terms of m.

•  $k=\frac{3}{2m+1}$  

•  $k=\frac{3}{2m-1}$  

•  $k=\frac{2m-1}{3}$  

•  $k=\frac{2m}{3-m}$  

Given

 $2y=\frac{2\left(x+3\right)}{3x}$  , express x in terms of y

•  $x=\frac{3}{3y-1}$  

•  $x=\frac{3}{3y+1}$  

•  $x=\frac{6}{3y-1}$  

•  $x=\frac{6}{3y+1}$  

Given that

 $5=\frac{1}{2}\sqrt{\frac{5+2x}{y}}$  , express x in terms of y.

•  $50y+\frac{5}{4}$  

•  $50y+\frac{5}{2}$  

•  $50y-\frac{5}{4}$  

•  $50y-\frac{5}{2}$  

Given

 $2m^2-1=2\left(p-m^2\right)$  , express m in terms of p.

•  $m=\frac{\sqrt{1-2p}}{4}$  

•  $m=\frac{\sqrt{2p+1}}{4}$  

•  $m=\frac{\sqrt{1-2p}}{2}$  

•  $m=\frac{\sqrt{2p+1}}{2}$