Ascientific law will change in time describes an observation is based on opinions and beliefs can be overturned if scientists vote to

Describes an observation is the correct answer

opinions and beliefs is wrong because laws are based on facts

scientist vote is wrong because they are changed by discovery, not peoples votes

change in time is wrong cause they can change but dont have to

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.