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Anvisha [2.4K]
2 years ago
6

Which number is the smallest? 4.4 ⋅ 10−5, 3.99 ⋅ 10−6, 2.6 ⋅ 102, 1.85 ⋅ 103

Mathematics
2 answers:
harina [27]2 years ago
7 0
The answer is:  [B]:  " 3.99 * 10⁻⁶ " .
______________________________________________
  Note:
______________________________________________
We are given the following answer choices, and we are asked which one is the "smallest number" :
_______________________________________________
  [A]:  4.4 * 10⁻⁵
_________________________________________
  [B]:  3.99 ⋅ 10⁻⁶
______________________
  [C]:  2.6 ⋅ 10²
______________________
  [D]:  1.85 ⋅ 10³
_______________________
         We can rule out answer choices: [C] and [D]; since these values, essentially "direct us" to move the decimal point FORWARD "2 places" and "3 places", respectively;  whereas choices [A] and [B] essentially "direct us" to move the decimal point BACKWARD "5 places" and "6 places" respectively.  Note that all values given in the answer choices are written in proper "scientific notation" —that is, beginning with a "single integer followed by (a) decimal point(s) and then additional digits (when needed).  So, the answer choice that essentially "directs us" to move the decimal point BACKWARD "6 places" —
___________________________________________________
             →   Answer choice:  [B]:  " 3.99 * 10⁻⁶ "  ;
______________________________________________
                  is the smallest value ; and as such, the correct answer.
________________________________________________________
Assoli18 [71]2 years ago
6 0

                   Answer:

<u>Answer choice: B</u>:  " 3.99 * 10⁻⁶

                  Explanation:

  <u>I got it right so don't worry :)</u>

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For the last 4.5 hours, the temperature has decreased at a rate of 2.8 Degrees Fahrenheit per hour. Which best represents the ov
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5 0
3 years ago
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2 years ago
Ling is 1 year less than twice as old as his sister. If the sum of their ages is 14 years how old is Ling
SashulF [63]
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7 0
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