Question

me ajudem rápido pfvr dou 5 estrelas e 20 pontos​

Answer 1

Resposta:

sim por que 5+5=10+10=20

Answer 2

Resposta:

Hey!! Vou tentar ajudar!

Explicação passo a passo:

a) $9^{7} /9^4$ = $9^{7-4}$ = $9^{3}$

b) $(\frac{3}{7} )^{3} * (\frac{3}{7} )^{4} / (\frac{3}{7} )^{5}$ = $(\frac{3}{7} )^{3} * (\frac{3}{7} )^{4} * (\frac{3}{7} )^{-5}$ = $(\frac{3}{7} )^{3+4-5} = (\frac{3}{7} )^{2}$ ou  $\frac{9}{49}$

c) $\frac{1}{21} * (\frac{1}{21} )^{-7} / (\frac{1}{21} )^{5} = (\frac{1}{21} )^{-11} = 21^{11}$

d) $(10^{-4} )^{3} * 10^{3} = 10^{-12} *10^3 = 10^{-9} = \frac{1}{10^9}$

e) $(5^{4}/5{-9} )^2 /5^{-5} = (5^{13})^2/5^{-5} = 5^{26} / 5^{-5} = 5^{31}$

f) $[(\frac{3}{7}^5/\frac{3}{7})^{-1}]^3 = (\frac{3}{7})^{18}$

g) $\frac{9*81*729}{27} = 9*3*729 = 19683$

h)$\frac{a^{2}b^{6}c^{12}}{(abc)^2} = \frac{a^{2}b^{6}c^{12}}{a^{2}b^{2}c^2} = b^{4}c^{10}$

i)$\frac{0,1* 10^{3} *(0,0001)^{2}}{1000 * 0,0001*10} = \frac{0,00001}{10} = 0,000001$

Espero ter ajudado!!!

( qualquer erro, me desculpe)