Simplify the numerical expression. ( 3 2 . 7 -1 ) 2
A) $\frac { 81 } { 49 }$
B) $3,969$
C) $\frac { 27 } { 49 }$

Question

Quizplus · Accepted Answer

First, we simplify the expression inside the parentheses by moving the decimal point one place to the left since there is a negative exponent. So, we have (32.7^-1) = 0.0306.
Now, we square 0.0306 which gives us 0.000936.
Therefore, (32.7^-1)^2 is equivalent to 0.000936. 
This can also be written as 936/1000000 and can be simplified to 81/4900. So, the simplified expression is (32.7^-1)^2 = 81/4900. 
Thus, the best choice is A, 81/49, since it is the simplified form of the expression.

Simplify the Numerical Expression 8149\frac { 81 } { 49 }4981​

Simplify the Numerical Expression $\frac { 81 } { 49 }$