6. Carla used a calculator and found out that 31.5 x 21.68 = 682.92. She is suspicious about her answer because it doesn't have three decimal places in it. Explain to her why the answer is correct by reasoning about the size of the factors, and also why her answer doesn't have 2 + 1 = 3 decimal places.

6. Carla used a calculator and found out that 31.5 x 21.68 = 682.92. She is suspicious about her answer because it doesn't have three decimal places in it. Explain to her why the answer is correct by reasoning about the size of the factors, and also why her answer doesn't have 2 + 1 = 3 decimal places.

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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