In the coordinate plane, point b is 1 unit directly above point a. when points a and b are reflected about a horizontal line, their images are a' and b', respectively. if the coordinates of a' are (r, s), what are the coordinates of b' in terms of r and s? (r, s-1) (r, s+1) (r-1,s)

To ? nd out how many students are unhappy with the dining hall food, you distribute a survey. which method of surveying would produce the least amount of bias in your data?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?