## g_harris5 Group Title Which of the following expressions is written in scientific notation? 73.4 x 105 0.09 × 107 80 x 103 4.22 x 10–3 one year ago one year ago

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1. RONNCC Group Title

well what is scientific notation?

2. Hero Group Title

By definition, scientific notation is any number of the form $$a \times 10^b$$ such that $$1 \le |a| < 10$$

3. Hero Group Title

So $$a$$ needs to be a number between 1 and 10.

4. Hero Group Title

$$b$$ must be an integer

5. amistre64 Group Title

i agree that b has to be an integer since its defines a placeholder of a base10 system.

6. amistre64 Group Title

havent seen a 10^(1/2) position yet ;)

7. RONNCC Group Title

@amistre64 my bad. it's the floor of the log.

8. RONNCC Group Title

@Hero ^