Write an equivalent expression. Use an associative law.a + (b + 6)
A. a + (6 + b)
B. a(b + 6)
C. (a + b) + 6
D. (b + 6) + a
Answer: C
Mathematics
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Sketch D and g(D) from the description of D and change of variables 
x = u2 - v2, y = 2uv where D is the rectangle 0 ? u ? 1, 0 ? v ? 1
A.
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B. None of these.
C.
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D.
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Mathematics
Simplify the complex fraction using the LCD method.
A. 
B. 
C. 
D. 
Mathematics
Multiply the expressions.(x - 6)(x + 6)
A. x2 - 36 B. x2 - 12x - 36 C. x2 - 12 D. x2 + 12x - 36
Mathematics
Solve the problem.A satellite dish is shaped like a paraboloid of revolution. The signals that emanate from a satellite strike the surface of the dish and are reflected to a single point, where the receiver is located. If the dish is 8 feet across at its opening and is 2 feet deep at its center, at what position should the receiver be placed?
What will be an ideal response?
Mathematics