Determine the EXACT values of A and B. [(10x^3 y^5)(4x^2 y^-2) /20x^-4 y^B]^A= y^12 divided by 8x^27

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

Use the distance formula to find the distance between (-3,5) and (3,1)