Evaluate the expression for the given values of the variables.
for x = 
, y = - 
, z = 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the curvature of the space curve.r(t) = (7 t sin t + 7 cos t)i + 7j + (7t cos t - 7 sin t)k
A. ? = 
B. ? = - 
C. ? = 7t
D. ? = 
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The polar equation of a circle is given. Give polar coordinates for the center of the circle and identify its radius.r = -10 cos ?
A. C(-5, 0), radius = 5
B. C(-10, 0), radius = 10
C. C
, radius = 5
D. C
, radius = 10
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Find the perimeter of (the distance around) the figure. 
A. 364 ft B. 32,800 ft C. 456 ft D. 466 ft
Mathematics
Identify the digit with the given place value.395.794ones
A. 90 B. 5 C. 9 D. 0.7
Mathematics