In a school survey, students showed these preferences for instructional materials. Answer the question.
How many degrees are in the central angle for the "radio" sector?
A. 5°
B. 9°
C. 180°
D. 18°
Answer: D
Mathematics
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Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them. 8x - y + 7z = 54-3x - 2z = -18 4y + z = 22
A. x = -2, y = 4, z = 4 B. x = 2, y = 4, z = 6 C. x = 2, y = 6, z = 4 D. Inconsistent
Mathematics
Solve the problem.Find the area of the rectangle.
A. 144 m2 B. 841 m2 C. 82 m2 D. 348 m2
Mathematics
Determine if the ordered pair is a solution to the system of linear inequalities in two variables.
(4, -2)
A. Yes B. No
Mathematics
Graph the inequality.x + y ? -3 
A. 
B. 
C. 
D. 
Mathematics