Question

pfv é para amanhã cedo pfv ​

Answer 1

Resposta:

c) 12,34 • 7,4 = 91,316

$d) \: 12.34 \div 2.2 \\ \\ \frac{1234 \div 2}{100 \div 2} \div 2.2 \\ \\ \frac{617}{50} \div 2.2 \\ \\ \frac{617}{50} \div \frac{22 \div 2}{10 \div 2} \\ \\ \frac{617}{50} \div \frac{11}{5} \\ \\ \frac{617}{50 \div 5} \times \frac{5 \div 5}{11} \\ \\ \frac{617}{10} \times \frac{1}{11} \\ \\ \frac{617}{110}$

$e) \: {(2.3)}^{2} \\ \\ {( \frac{23}{10} )}^{2} \\ \\ \frac{ {23}^{2} }{ {10}^{2} } \\ \\ \frac{529}{100}$

$f ) \: \sqrt{0.64} \\ \\ \frac{64 \div 4}{100 \div 4} \\ \\ \frac{16}{25} \\ \\ \sqrt{ \frac{16}{25} } \\ \\ \frac{ \sqrt{16} }{ \sqrt{25} } \\ \\ \frac{ \sqrt{ {4}^{2} } }{ \sqrt{ {5}^{2} } } \\ \\ \frac{4}{5}$