For one Chemistry test, Marcus had to answer 50 questions. Of these questions, Marcus answered 60% of them correctly. How many questions did Marcus correctly answer on her test?

60% of 50 is 30

So he answered 30 questions correctly

And 20 questions incorrectly.

2015 they have a perecent

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.