Question

$-\frac{0.00036 \times 0.000064}{0.0000006 \times 0.00008} =$

• A. -4800
• B. -4.8
• C. -480
• D. -48

Answer 1

Answer:

C. -480

$-\frac{0.00036 \times 0.000064}{0.0000006 \times 0.00008} =$

=$-\frac {36 \times {10^-5} \times 64 \times 10^{-6}}{6 \times 10^{-7} \times 8 \times 10^{-5}}$

$=-\frac {36 \times 64 \times 10^{-11}}{6 \times 8 \times 10^{-12}}$

$=-6 \times 8 \times 10$

$= -480$