Emmajanedoanidn
Answered

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Subtract the following numbers, using scientific notation and the correct number of significant digits.

6.94 × 103 mm - 4.5 × 102 mm = _____.

2.4 × 103 mm
2.44 × 102mm
6.49 × 103 mm
6.5 × 103 mm

Sagot :

Histrionicusidn

Answer:

The correct answer is - 6.49 × 10^3 mm.

Explanation:

The correct scientific notation of the given subtraction problem is:

6.94 × 10^3 mm - 4.5 × 10^2 mm = _____.

The correct number of significant digits is

a. 6.94 × 10^3 mm = 3

b. 4.5 × 10^2 mm = 2

So subtracting the 6.94 × 10^3 mm - 4.5 × 10^2 mm

= 6940 - 450

= 6.49× 10^3 mm.

Answer:

6.5x 10^3 mm

Explanation:

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