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Which of the following expressions is written in scientific notation?
a)73.4*10^5
b)0.09*10^7
c)80*10^3
d)4.22*10^(–3)

what is exactly scientific notation?

Sagot :

[tex]a\cdot10^n\ is\ scientific\ notation\ if\ a\in\left<1;\ 10\right)\\\\a)\ 73.4\cdot10^5-NO-(73.4 > 10)\\\\b)\ 0.09\cdot10^7-NO-(0.09<1)\\\\c)\ 80\cdot10^3-NO-(80>10)\\\\d)\ 4.22\cdot10^{-3}-YES[/tex]
laniebug5of5

Lesson 2: Scientific Notation quick check

1. D) 4.22x10^-3

2. A) 7.08x10^-8

3. A) 6.1x10^-7

4. D) 1.25x10^-4

5.C) Doubling n results in doubling the value of the expression.

6. B) 2.45x10^5

7.A) 3x10^3

Please use this for double checking your answers!

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