Use a formula to solve the problem.A circle has a circumference of 30? meters. Find the radius of the circle.
A. 30 m
B. 5 m
C. 15 m
D. 8 m
Answer: C
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Find the coordinates of the centroid (to the nearest 0.01 in.) of the uniform flat-plate machine part shown.
A. (2.34 in., 2.47 in.) B. (0.84 in., 2.38 in.) C. (1.03 in., 1.71 in.) D. (0.84 in., 1.71 in.)
Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).3 - 3
i
A. 6(cos 300° + i sin 300°) B. 6(cos 150° + i sin 150°) C. 3(cos 330° + sin i 330°) D. 3(cos 330° + i sin 330°)
For the given functions f(x) and g(x), find a value x for which (f?g)(x) = (g?f)(x).f(x) = x2 + 6x + 9, g(x) = x + 4
A. x = 
B. x = 
C. x = - 
D. x = - 
Find the equation of the hyperbola with foci 
, 
and 
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?
A. 
B. 
C. 
D. 
E. none of these