Question

efetue as seguintes operações, colocando as respostas em notação científica . a)2,6.10⁷.3.10‐³= b)1,5.10‐⁸.8.10⁶= c)6.10⁸.1,5.10⁷= d)0,0008.150 000 000= e) 3,5.10².1,5.10‐³= f)2⁴.10‐⁵.2².10‐³= g)9.10⁹.3.10‐⁹.2.10‐³= h)9.10⁹.2.10‐⁶.5.10‐⁶=​

Answer 1

Resposta:

$a = 7.8 \times 10 ^{4} = 78000$

$b = 1.2 \times 10 ^{ - 1} = 0.12$

$c = 9 \times 10 ^{15} = 900000000000000000$

$d = 1.2 \times 10^{5} = 120000$

$e = 5.25 \times 10 ^{ - 1} = 0.525$

$f = 6.4 \times {10}^{ - 7} = \frac{32}{5 \times 10 ^{7} } = 0.00000064$

$g = 5.4 \times 10 ^{ - 2} = 0.054$

$h = 9 \times 10 ^{ - 2} = 0.09$