Solve the problem.A spotlight has a parabolic cross section that is 6 ft wide at the opening and 2.5 ft deep at the vertex. How far from the vertex is the focus? Round answer to two decimal places.
A. 0.21 ft
B. 0.52 ft
C. 0.90 ft
D. 0.26 ft
Answer: C
Mathematics
You might also like to view...
Solve the equation for x. Write your answer as an improper fraction if necessary. 8 - 6x = 32
A. x = 30 B. x = -30 C. x = -26 D. x = -4
Mathematics
Find the sum of the first 64 even natural numbers.
A. 4,072 B. 4,221 C. 4,206 D. 4,160
Mathematics
Provide an appropriate response.Explain why possible solutions of radical equations must be checked.
What will be an ideal response?
Mathematics
Find the sum or difference.(3a4 - 8a3) + (6a4 + 5a3)
A. 6a7 B. 9a4 - 3a3 C. 6a14 D. 9a8 - 3a6
Mathematics