Solve the problem.A satellite dish is shaped like a parabola. The signals that are received by the dish strike the surface of the dish and are reflected to a single point, where the receiver of the dish is located. If the dish is 12 feet across at its opening and 3 feet deep at its center, at what position should the receiver be placed?
A. 3 feet from the base along the axis of symmetry
B. 0.4 feet from the base along the axis of symmetry
C. 9 feet from the base along the axis of symmetry
D. 12 feet from the base along the axis of symmetry
Answer: A
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Write an equivalent sentence for the statement.Denim is not out and linen is not in. (Hint: Use De Morgan's laws.)
A. Denim and linen are in. B. It is not the case that denim is out or linen is in. C. It is not the case that denim is out and linen is in. D. It is not the case that denim is in or linen is out.
After using the quadratic formula to solve the equation, give the sum of the two solutions.
?
?
A. 292 B. 2 C. 287 D. 1 E. 17
Factor.98a4b - 8b3
A. 98a4b - 8b3 B. 2b(7a + 2b)2 C. 2b(7a - 2b)2 D. 2b(7a2 + 2b)(7a2 - 2b)
Find the opposite, or additive inverse.4
A. 
B. 0
C. -4
D. -4