Use the converse of the Pythagorean theorem to decide whether ΔABC is a right triangle by answering the questions. 1. Use the Pythagorean theorem to find AD. Show your work.

2. Find AC. Show your work.

3. Is ΔABC a right triangle? Explain. (Hint: use the Pythagorean Theorem to explain)

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?