Express 96,342 m using 2 significant figures. A)9.60 × 10 ⁴ m B)9.6 × 10 ⁴ m C)9.60 × 10 ^-⁴ m D)9.6 × 10 ^-⁴ m E)96000. m

Question

Quizplus · Accepted Answer

When expressing a number using significant figures, we look at the first significant digit and count from there. In this case, the first significant digit is 9, and the second is 6. Therefore, we only need 2 significant figures, and we round to the nearest value. Since the third digit (3) is less than 5, we round down, making the answer 9.6 × 10^4 m. Choice B is the only one that correctly expresses this answer in scientific notation with 2 significant figures.

Express 96,342 M Using 2 Significant Figures