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Marvin F.'s Resources


This is a conversion from one American standard unit to another, NOT from American standard to metric. "Multiply to change larger units to small units." is a valid rule only if you use specific conversion factors. The best way to change units is to use Dimensional Analysis...

3.1 x 10^11 (answer)

This is scientific notation:  A number multiplied by ten to a power.  Moreover, It is Standard Scientific Notation: the number in front is > or = to 1 and <10


If someone tells you that the answer is x=5/2 then they should be able to show you how to get that answer.  My answer is different. (x-2)/3 + (x-2)/4 = 7/24  I approach this by expressing everything as 24ths.  Thus I must multiply the first term by 8/8 and the second term...