And the conversion for the inch to the centimeter is 1 inch = 2.54 cm exactly. So, in the same vCalc conversion equation (Length Conversion), if you input 1 inch, you get out 2.54 cm. So, he rephrased answer to your question is: there are 30.48 centimeters on a standard 12 inch ruler.
The answer is three significant figures. The 1 and the 7 are both significant, because they are non-zero quantities.
This is where significant figures gets a little more complicated, because if a zero is used as a placeholder (i.e. 0.00027 cm) then it is insignificant.
But in the case above, the zero isn't being used as a placeholder, and thus, is significant.
16682
it says u need 20 characters so I'm just going to type now
16t -2(2t+5) =14
distribute the parenthesis first:
16t-4t-10 = 14
combine like terms:
12t - 10 = 14
add 10 to both sides:
12t = 24
divide both sides by 12
t = 24/12
t = 2
