Use a graphing calculator to estimate f '(a) for the given value of a.f(x) = cos x; a = 5
A. 0.2794
B. -0.2794
C. 0.9589
D. -0.9589
Answer: C
Mathematics
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?Which of the following polyhedra is not a regular polyhedron?
A. ?Tetrahedron B. ?Octahedron C. ?Icosahedron D. ?Cube E. ?Diahedron
Mathematics
Solve the problem.Find the foci and asymptotes of the following hyperbola:
- 
= 1
A. Foci: (0, -15), (0, 15); Asymptotes: y = 
x, y = - 
x
B. Foci: (0, -25), (0, 25); Asymptotes: y = 
x, y = - 
x
C. Foci: (-25, 0), (25, 0); Asymptotes: y = 
x, y = - 
x
D. Foci: (-15, 0), (15, 0); Asymptotes: y = 
x, y = - 
x
Mathematics
Solve the equation using the quadratic formula.x2 - 14x + 53 = 0
A. {9, 5} B. {7 ± 2i} C. {-7 ± 2i} D. {14 ± 4i}
Mathematics
Classify the angle as acute, right, straight or obtuse.
A. acute B. right C. obtuse D. straight
Mathematics