3 out of 60 is what percent?
2 answers:
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The answer is the option C and the option D, which are:
C. Double the number of pages in the book.
D. The age of my friend.
The explanation for this problem is shown below:
By definition, a variable is an unkown quantity. In the Option A the quantity is given: seconds in a minute. In the option B you know the quantity too, which is
years old. But the option C and the option D does not give any quantity, you don't know the number of pages in the book or the age of the friend yet. Therefore, the answer is the options C and D.
The length of the molecule is in scientific notation.
Data;
- Width of molecule = 3*10^-6 cm
- Number of molecules = 225
This can be calculated as the total length of the 225 molecules added together. To do this, we simply multiply both the numbers of the molecules by the width of the molecule.
This becomes;
The length of the molecule is in scientific notation.
Learn more on scientific notation here;