SOLUTION: simplify the following radical expression: 4 sqrt (81) / 16 a) 2/3 b) 2 c) 3/2 d)4

Algebra ->  Square-cubic-other-roots -> SOLUTION: simplify the following radical expression: 4 sqrt (81) / 16 a) 2/3 b) 2 c) 3/2 d)4      Log On


   

Question 316188: simplify the following radical expression: 4 sqrt (81) / 16
a) 2/3
b) 2
c) 3/2
d)4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%284%2Asqrt%2881%29%29%2F16=%281%2Across%284%29%2A%289%29%29%2F%284%2Across%2816%29%29+
%284%2Asqrt%2881%29%29%2F16=9%2F4
Is the entire expression under a square root?
if so then,
sqrt%284%2Asqrt%2881%29%29%2F16=sqrt%289%2F4%29
sqrt%284%2Asqrt%2881%29%29%2F16=3%2F2
then c) is the correct answer.