+/- 3/10
Restate the question: Solve for x: x2 = 9/100.
The rule to remember is that if x2=a, then x=+/- the square root ("sqrt") of a. +/- means that there are two solutions, a positive one and a negative one. (This is a little hard to explain without paper and pencil)
So in you question, x = +/- sqrt(9/100) = +/-sqrt(9)/sqrt(100) = +/- 3/10.
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obtained value/actual value * 100
325
The key is: Remember that "percent" means " 1/100 ".
percent means over 100 48/100 or 12/25
100 squared is 10,000To square a number multiply it by itselfso 100² = 100 × 100 = 10,000.