What is not the concept behind tessellations?
?
A. ?A covering of a two-dimensional area.
B. ?The repeating pattern of a geometric shape.
C. ?Gaps may occur in semi-regular tessellations.
D. ?No gaps or overlaps may occur in either regular or semi-regular tessellations.
E. ?Tessellations occur about a point.
Answer: C
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Solve.The orbit of a comet is an ellipse with eccentricity e = 0.113 with the sun at a focus. If its minimum distance to the sun is 0.21 AU, what is its maximum distance from the sun?
A. 0.47 AU B. 0.23 AU C. 0.26 AU D. 0.24 AU
Simplify.
A. 
B. 
C. 36
D. 1
Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = log10(x + 8)y = x2
A. (-0.92, -0.85), (0.98, -0.95) B. (-1.38, -1.89), (1.50, -2.25) C. (-0.92, 0.85), (0.98, 0.95) D. (-1.38, 1.89), (1.50, 2.25)
Simplify the expression.(-7x6y4z)2
A. 49x12y8z2 B. -49x12y8z2 C. 14x12y8z2 D. -7x8y6z