Consider the following measured number.640,000 m If this measurement were made to the nearest km (± 1 km),how should the answer be expressed in exponential notation? A)6.4 × 10⁵ m B)6.40 × 10⁵ m C)6.400 × 10⁵ m D)6.4000 × 10⁵ m E)6.40000 × 10⁵ m

Question

Quizplus · Accepted Answer

To express 640,000 meters to the nearest kilometer in exponential notation, we convert meters to kilometers (640,000 m = 640 km) and then use scientific notation. Since the measurement is to the nearest kilometer, we need two decimal places to indicate this precision, resulting in 6.40 × 10^5 m.

Consider the Following Measured Number