Solve the problem.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 8 m down from the top of the dome the ceiling is 4 m wide, find the best location for the light source.
A. 0.5 m down from the top
B. 0.3 m down from the top
C. 0.1 m down from the top
D. 0.2 m down from the top
Answer: C
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Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(1, 7)} B. no solution; ? C. {(-8, 0)} D. {(0, 8)}
Find the first four terms of the binomial series for the given function.
-2
A. 1 - 
x + 
x2 - 
x3
B. 1 - 
x + 
x2 - 
x3
C. 1 - 
x + 
x2 - 
x3
D. 1 - 
x + 
x2 - 
x3
Provide an appropriate response. Explain the difference between raising a negative base to a positive power and raising a positive base to a negative power. Include information on even- and odd-numbered powers.
What will be an ideal response?
Refer to right triangle ABC with 
.
?
?
If 
and 
yd, find a.
?
Apply the rules regarding the use of significant digits when determining your answer.
?
__________ yd
Fill in the blank(s) with the appropriate word(s).