Add.
A. 959.976
B. 75.22
C. 68.14
D. 61.06
Answer: C
Mathematics
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Find the principal unit normal vector N for the curve r(t).r(t) = (9t sin t + 9 cos t)i + (9t cos t - 9 sin t))k
A. N = - 
(cos t)i - 
(sin t)k
B. N = (cos t)i - (sin t)k
C. N = (-sin t)i - (cos t)k
D. N = (sin t)i + (cos t)k
Mathematics
Provide an appropriate response.What is the ratio of the area of the larger triangle to the area of the smaller one?
A. 9 : 1 B. 1 : 9 C. 3 : 1 D. 1 : 3
Mathematics
Sketch a typical level surface for the function.f(x, y, z) = cos (x2 + y2 + z2)
A. 
B. 
C. 
D. 
Mathematics
Add or subtract as indicated. Write your answers in standard form.(-7 + 9i) - 2
A. -5 - 9i B. -5 + 9i C. -9 + 9i D. 9 - 9i
Mathematics