braggsdiamond8368 braggsdiamond8368

11-09-2018
Mathematics

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Find (2 × 10^7) + (3 × 10^4).
a. 2.003 × 10^4
b. 2.003 × 10^7
c. 2.03 × 10^4
d. 2.03 × 10^7

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sqdancefan sqdancefan

13-09-2018

(2 × 10^7) + (3 × 10^4)

= (2 × 10^7) + (0.003 × 10^7) . . . . make the exponents match

= (2 + 0.003) × 10^7

= 2.003 × 10^7

The appropriate choice is ...

... b. 2.003 × 10^7

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