Tommy and sally are arguing over the meanings of x^4 and x^-4. tommy argues that x^4 is the reciprocal of x^-4. sally insists that x^-4 is the reciprocal of x^4 . who is correct? a. tommy is correct. x^4 is the reciprocal of x^-4. b. sally is correct. x^-4 is the reciprocal of x^4. c. both tommy and sally are correct. x^-4 and x^4 are the reciprocals of each other. d. niether sally nor sally is correct. neither x^-4 nor x^4 is a reciprocal of the other.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )