The ratio of the number of Esther’s cards to the number of Andy’s cards is 5:8. If Esther gives 3/10 of her cards to Andy, what will be the new ratio of the number of Esther’s cards to the number of Andy’s cards?

Alaptop computer is purchased for $1350 . after each year, the resale value decreases by 30% . what will the resale value be after 5 years?

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%