Emma uses a 250-meter roll of crepe paper to make steamers. how many dekameters of crepe paper does emma use?

A dekameter (or decameter) first needs to be translated into how many meters. deka means 10, so a dekameter must be 10 meters. So we then divide 250 by 10, and come up with 25 dekameters.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.