the commutative property was used
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The quickest way for converting small numbers like this to binary would probably be to find the closest power of 2, then add/subtract intermediate powers of 2 as needed.
Converting 8 is immediate, since it's already a power of 2:

Converting 15 and 17 is also pretty easy if you're familiar with the rules of arithmetic in binary.

Answer:
x = ± 
Step-by-step explanation:
Given
3x² - 9 = 0 ( add 9 to both sides )
3x² = 9 ( divide both sides by 3 )
x² = 3 ( take the square root of both sides )
x = ± 
Answer:0.02miles per hour
Step-by-step explanation:
Multiply 43 by 60 that equals 2580 then divide 49 by 2580