The rectangular piece of property measures 10 mi by 4 mi. find an equation for the ellipse if the path is to touch the center of the property line on all 4 sides.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens

Percent increase and decrease. original number: 45 new number: 18