Solve the system of equations by elimination.6x + 3y = 512x - 6y = 38
A. (-10, 3)
B. (-3, 10)
C. (3, -10)
D. (10, -3)
Answer: D
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Which of the following does not occur in tessellations? ?
A. ?A regular polygon tessellates about a point. B. ?An equilateral triangle tessellates about a point. C. ?A square tessellates about a point because 4 rotations of 90? completes the tessellation. D. ?A regular hexagon tessellates about a point because 3 rotations of 120? completes the tessellation. E. ?There are no other regular polygons with sides greater than 6 which tessellate.
Solve the equation.
x = - 
A. 
B. 
C. 
D. 
Use the substitution formula to evaluate the integral.
A. 
B. - 
C. - 
D. - 
Solve the problem. Use a Venn diagram to find your answer.The subsets A, B, and C of the universe U satisfy the following conditions:n(A ? B ? C) = 165n(A ? B ? C) = 22n(A ? B) = 46n(A ? C) = 43n(B ? C) = 41n(A) = 111n(B) = 82n(C) = 80n(U) = 165Find n(
? B ? C).
A. 18 B. 21 C. 19 D. 20