Q. Which is equal to 2731?Choices:(A) (−27)−3(B) 27−3(C) −(−27)−31(D) (−27)31
Understand expression: Understand the given expression 2731. The expression 2731 represents the reciprocal of 27 raised to the power of 3.
Simplify 273: Simplify the expression 273.Calculating 273 gives us 27×27×27=19683.
Rewrite as 196831: Rewrite the given expression using the result from Step 2.The expression 2731 can be rewritten as 196831.
Identify equivalent expression: Identify the equivalent expression among the choices.We need to find an expression that simplifies to 196831.
Analyze choice (A): Analyze choice (A) (−27)−3. The negative exponent indicates the reciprocal, so (−27)−3 is equivalent to 1/(−27)3. However, this is not the same as 1/273 because of the negative sign inside the parentheses.
Analyze choice (B): Analyze choice (B) 27−3. The negative exponent indicates the reciprocal, so 27−3 is equivalent to 1/273. This matches our given expression.
Analyze choice (C): Analyze choice (C) −1/(−27)−3. The negative exponent indicates the reciprocal, so −1/(−27)−3 is equivalent to −1/(1/(−27)3), which simplifies to −(−27)3. This introduces an unnecessary negative sign and does not match our given expression.
Analyze choice (D): Analyze choice (D) (−27)31. This choice has a negative sign inside the parentheses, which does not match our given expression 2731.
Conclude correct answer: Conclude the correct answer.Based on the analysis, the expression that is equal to 2731 is 27−3.