Solve the problem.A formula for the focal length of a lens isf = 
Calculate f (the focal length) for a = 14 cm and b = 16 cm. Round your answer to the nearest tenth, if necessary.
A. 6.5 cm
B. 7.0 cm
C. 8.0 cm
D. 7.5 cm
Answer: D
Mathematics
You might also like to view...
Write the complete factored form of the polynomial f(x).f(x) = 2x4 + 5x3 - 5x2 - 5x + 3
A. f(x) = 2
(x - 1)(x + 1)(x - 3)
B. f(x) = 2
(x - 1)(x + 1)(x + 4)
C. f(x) = 2
(x - 1)(x + 1)(x + 3)
D. f(x) = 
(x - 1)(x + 1)(x + 3)
Mathematics
Find the domain of the function.f(x) = 
A. {x|8 ? x ? 32} B. {x|-8 ? x < 8 or 8 < x ? 32} C. {x|-8 ? x ? 32} D. {x|x ? -8}
Mathematics
Find the unit vector having the same direction as v.v = 6i
A. u = i
B. u = 
i
C. u = 6i
D. u = 36i
Mathematics
Use the discriminant to determine whether the equation has two distinct real solutions, a single real solution, or no real solution.7x2 = -6x - 2
A. one real solution B. two real solutions C. no real solution
Mathematics