Solve the quadratic equation using the quadratic formula (if necessary, round the result to three significant digits).
x = ____ 
____j
What will be an ideal response?
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Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.The three angles in a triangle always add up to 180°. If one angle in a triangle is 63° and the second is 2 times the third, what are the three angles?
A. 63°, 76°, 41° B. 63°, 78°, 39° C. 63°, 77°, 40° D. 63°, 79°, 38°
Using Green's Theorem, calculate the area of the indicated region.The circle r(t) = (3 cos t)i + (3 sin t)j, 0 ? t ? 2 ?
A. 2? B. 6? C. 9? D. 3?
Find the area of the rectangle or square.
16 cm
A. 64 square centimeters B. 256 square centimeters C. 512 square centimeters D. 251 square centimeters
Solve the problem.Mike, Joe, and Bill are painting a fence. The painting can be finished if Mike and Joe work together for 4 hours and Bill works alone for 2 hours or if Mike and Joe work together for 2 hours and Bill works alone for 5 hours, or if Mike works alone for 6 hours, Joe works alone for 2 hours, and Bill works alone for 1 hour. How much time does it take for each man working alone to complete the painting?
A. Mike 8 hr, Joe 8 hr, Bill 16 hr B. Mike 12 hr, Joe 10 hr, Bill 10 hr C. Mike 8 hr, Joe 16 hr, Bill 8 hr D. Mike 16 hr, Joe 8 hr, Bill 8 hr