Find the curvature of the curve r(t).r(t) = (3t + 10)i - 10j + (4 - 
t2)k
A. ? = 3
3/2
B. ? = 
C. ? = 3
D. ? = 
Answer: D
Mathematics
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Rationalize the denominator. Assume all variables represent positive real numbers.
A. 5
B. 54p
C. 
D. 
Mathematics
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cot ? = -3, sec ? > 0Find sin 
.
A. 
B. 
C. - 
D. 
Mathematics
Find all the x-values that meet the stated condition.For f(x) = x2 - 2x, find all x-values for which f(x) ? 8.
A. [-2, 4], or {x
-2 ? x ? 4}
B. (-4, 2), or {x
-4 < x < 2}
C. [-4, 2], or {x
-4 ? x ? 2}
D. (-?, -4] ? [2, ?), or {x
x ? -4 or x ? 2}
Mathematics
Graph the equation by plotting three points and connecting them.y = 3x - 6
A. 
B. 
C. 
D. 
Mathematics