Susan wants to buy a paddle boat for $840. she'll pay 20% down and pay the rest in six monthly installments. what will be the amount of each monthly payment? a. $168 b. $28 c. $140 d. $112

The density of the cube is 40

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.