Question

Please help me with #16 I am really bad at doing fractions

Answer 1

To see if it's a right triangle we need to determine if a²+b²=c²
($\frac{3}{20}$)² + ($\frac{1}{5}$)² = $\frac{1}{4}$
$\frac{9}{400}$ + $\frac{1}{25}$ = $\frac{1}{16}$
$\frac{9}{400}$ + $\frac{16}{400}$ = $\frac{25}{400}$
$\frac{25}{400}$ = $\frac{25}{400}$

So it is a right triangle