Jeff and kirk can build a 75-ft retaining wall together in 6 hours. because jeff has more experience, he could build the wall by himself 2 hours quicker than kirk. how long would it take kirk (to the nearest minute) to build the wall by himself?

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

A50-foot ladder is leaning against a vertical wall. if the base of the ladder is 45 feet from the base of the wall, find the angle the bottling of the ladder makes with the ground.

What is the measure of angle a and angle c ?