Question

e)3/4 - (5/2) ^ - 2 f) 0, (4) + 5 * 3 ^ - 2​

Answer 1

e)

$\frac{3}{4} - (\frac{5}{2} ) {}^{ - 2} \\ \\ = \frac{3}{4} - ( \frac{2}{5} ) {}^{2} \\ \\ = \frac{3}{4} - \frac{4}{25} \\ \\ = \frac{59}{100} = 0.59$

f)

$0.(4) + 5 \times 3 {}^{ - 2} \\ \\ = \frac{4}{9} + 5 \times \frac{1}{3 {}^{2} } \\ \\ = \frac{4}{9} + \frac{5}{9} \\ \\ = \frac{9}{9} = 1$