Question

a) (8,41.103) + ( 9,71 x 104 ) = b) (4 x 10−6) x (4 x 10−4) = ME AJUDEM POR FAVOR

Answer 1

Explicação passo-a-passo:

a)

• $\sf 8,41\cdot10^3=0,841\cdot10^4$

Assim:

$\sf 8,41\cdot10^3+9,71\cdot10^4$

$\sf =0,841\cdot10^4+9,71\cdot10^4$

$\sf =(0,841+9,71)\cdot10^4$

$\sf =10,551\cdot10^4$

$\sf =1,0551\cdot10^5$

b) $\sf 4\cdot10^{-6}\cdot4\cdot10^{-4}$

$\sf =(4\cdot4)\times10^{-6-4}$

$\sf =16\cdot10^{-10}$

$\sf =1,6\cdot10^{-9}$