Fill in the blank with one of the words or phrases listed below.
An angle that measures 90° is called a(n)
angle.
A. straight
B. acute
C. obtuse
D. right
Answer: D
Mathematics
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Find the curvature ? for the given function.r(t) = 12ti + (6 + 10 cos 
t)j + (7 + 10 sin 
)k
A. ? = 
B. ? = 
C. ? = 
D. ? = 
Mathematics
Subtract in the indicated base.
A. 6518 B. 7128 C. 6418 D. 6328
Mathematics
Factor completely. If the polynomial is prime, state so.4k3 + 256
A. 4(k - 4)(k2 + 4k + 16) B. 4(k + 16)(k2 - 16k + 64) C. 4(k + 4)(k2 + 4k + 16) D. 4(k + 4)(k2 - 4k + 16)
Mathematics
Find the x- and y-intercepts of the graph of the equation. y = x2 + 4x + 4
A. x-intercept: 4; y-intercepts: -2, -2 B. x-intercepts: -2, -2; y-intercept: 4 C. x-intercept: 4; y-intercepts: 2, 2 D. x-intercepts: 2, 2; y-intercept: 4
Mathematics