Solve the quadratic equation.Use the following property:For any real number a, if and only if or

src="https://sciemce.com/media/3/ppg__cognero__Section_1.1_Sets_Real_Numbers_and_Numerical_Expressions__media__4b9f6eab-8c36-43a4-ab45-748117729723.PNG" style="vertical-align:-4pt;" />. 



A.
B.
C.
D.
E.

---

Answer: C

Mathematics

Solve the problem. Round to the nearest hundredth.46% of what number is 80?

A. 173.91 B. 0.58 C. 1739.10 D. 58.00

Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 

A. Domain: all points in the xy-plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
B. Domain: all points in the xy-plane excluding x = 0; range: all real numbers; level curves: parabolas 
C. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: parabolas 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 

Set the viewing rectangle of your graphing calculator to  by  to solve the problem.Graph the following set of parametric equations for 0 ? t ? 2? and identify the letter of the alphabet that the graph resembles.x1 = -6 + 1.6t/?,y1 = -3 + 1.6t/?x2 = -6 + 1.6t/?,y2 = 0.2 - 1.6t/?

A. V B. y C. t D. X

Solve the equation by completing the square.x2 - 10x + 61 = 0

A. 5 + 6i B. 5 - 6i, 5 + 6i C. -1, 11 D. 5 - 36i, 5 + 36i