Question

how long is the mississippi river? select the best estimate. 3,700 kilometers 3,700 meters 3,700 millimeters 3,700 centimeters

Explanation:

Step1: Understand unit scales

Kilometers (km) are large units, meters (m), centimeters (cm), millimeters (mm) are smaller. A river like Mississippi is very long.

Step2: Compare units to real - world

• 3,700 meters = 3.7 kilometers (too short for a major river).
• 3,700 millimeters = 3.7 meters (way too short).
• 3,700 centimeters = 37 meters (also too short).
• 3,700 kilometers is a reasonable length for a major river like Mississippi.

Answer:

3,700 kilometers