Question

multiply or divide the following measurements. be sure each answer you enter contains the correct number of significant digits. 418.8 m ÷ 0.36 s = 1.2 × 10³ m/s 7.8084 cm × 4.225 cm = 33.10 cm² 133.0 g ÷ 0.55 ml = 2.4 × 10² g/ml

Explanation:

Step1: Calculate 418.8 m / 0.36 s

$418.8\div0.36 = 1163.33\cdots$. Since 0.36 has 2 significant - figures, the result should be rounded to 2 significant - figures. In scientific notation, it is $1.2\times10^{3}\frac{m}{s}$.

Step2: Calculate 7.8084 cm × 4.225 cm

$7.8084\times4.225 = 33.09959$. Since 4.225 has 4 significant - figures, the result should be rounded to 4 significant - figures, which is $33.10\ cm^{2}$.

Step3: Calculate 133.0 g / 0.55 mL

$133.0\div0.55=241.818\cdots$. Since 0.55 has 2 significant - figures, the result should be rounded to 2 significant - figures. In scientific notation, it is $2.4\times10^{2}\frac{g}{mL}$.

Answer:

The first result should be $1.2\times10^{3}\frac{m}{s}$, the second result is correct as $33.10\ cm^{2}$, and the third result is correct as $2.4\times10^{2}\frac{g}{mL}$.