Question

Dou 50 pontos pra quem me ajudar, to precisando

Answer 1

Resposta:

$1.\\ \\ I~~5^{-6} .5^{6} =5^{-6+6}=5^{0} =1~~~~verdadeira\\\\ II~~7^{3}: 7^{5} =7^{3-5} =7^{-2}~~~~falsa\\ \\ III~~(3^{5})^{2} =3^{5.2} =3^{10} ~~~~falsa\\ \\ IV~~3^{0} +3^{1}-3^{2} =1+3-9=-6~~~~falsa\\ \\ resposta:~~~~apenas~o~item~I~e~verdadeiro$

$2.\\ \\ \frac{0,0001~.~(0,01)^{2}~.~1000 }{0,001} =\frac{0,0001~.~0,0001~.~1000}{0,001} =\frac{10^{-4}.10^{-4}.10^{3} }{10^{-3} } =\\ \\ \frac{10^{-4-4+3} }{10^{-3} } =\frac{10^{-5} }{10^{-3} } =10^{-5-(-3)} =10^{-5+3} =10^{-2} =0,01$

$3.$

Answer 2

Resposta:

Explicação passo-a-passo: