Explain why the following is true: If C is the center of the circle in Figure 2; BCD is an equilateral triangle.
Since C is the center and A, B, D and E are all on the circle, CA, CB, CD and CE are all radii
and therefore congruent. ?BCD is 60° (vertical angles). Thus BCD is an isosceles triangle
and ?CDB ?CBD 60°.
Mathematics
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Evaluate the expression.1.0 - 6.8 ÷ 2.5 ? (5.8 - 6.3)2
A. -9.88 B. 0.32 C. -9.28 D. -0.58
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Find functions g and h such that f(x) = g(h(x)).f(x) = (2x - 4)8
A. g(x) = (2x)8, h(x) = 2x - 4 B. g(x) = (2x - 4)8, h(x) = x C. g(x) = x, h(x) = (2x - 4)8 D. g(x) = x8, h(x) = 2x - 4
Mathematics
Find the domain of the function.g(x) = 
A. {x|x > 16} B. {x|x ? -4, 4} C. {x|x ? 0} D. all real numbers
Mathematics