Simplify.
2
A. 
B. 
C. 
D. 
Answer: B
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Find the acceleration vector in terms of ur and u?.r = 2 cos 2t and ? = 4t
A. a = (-40 sin 2t)ur - 32 cos 2tu? B. a = (-40 cos 2t)ur + 32 sin 2tu? C. a = (-40 cos 2t)ur - 32 sin 2tu? D. a = (-40 cos 4t)ur - 32 sin 4tu?
Provide an appropriate response. Round your answer to the nearest hundredth if necessary.What is the length of the Koch curve have at step 6?
A. 5.62 B. 729 C. 4096 D. 7.49
Find all the roots of the given equation.x5 - 32 = 0
A. -2; -0.618 + 1.902j ; -0.618 - 1.902j; 1.618 + 1.176; 1.618 - 1.176j B. 2 C. 2; 0.618 + 1.902j ; 0.618 - 1.902j; -1.618 + 1.176j; -1.618 - 1.176j D. 2; 1.902 + 0.618j ; 1.902 - 0.618j; 1.176 + 1.618j; -1.176 - 1.618j
Find the center (h, k) and radius r of the circle with the given equation. x2 + 8x + 16 + y2 + 18y + 81 = 36
A. (h, k) = (9, 4); r = 36 B. (h, k) = (4, 9); r = 36 C. (h, k) = (-9, -4); r = 6 D. (h, k) = (-4, -9); r = 6