among all pairs of numbers with a sum of 239 find the pair whose product is maximum. write your answers as fractions reduced to lowest terms

Given right triangle abc, what is the value of tan(a)?

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.

Abox of chocolates cost $7 which equation relates the number of boxes sold parentheses x parentheses and total cost of the boxes sold parentheses y parentheses