Factor the polynomial completely.25y4 - 64
A. (25y2 + 1)(y2 - 64)
B. (5y2 + 8)2
C. (5y2 - 8)2
D. (5y2 + 8)(5y2 - 8)
Answer: D
Mathematics
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Solve the problem.Find the centroid of the region cut from the first quadrant by the line 
.
A. 
= 
, 
= 3
B. 
= 3, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Mathematics
Find all solutions of the equation.2 cos x - 1 = 0
A. x = 
+ n? or x = 
+ n?
B. x = 
+ n? or x = 
+ n?
C. x = 
+ 2n? or x = 
+ 2n?
D. x = 
+ 2n? or x = 
+ 2n?
Mathematics
Find the curvature of the curve r(t).r(t) = (6 + cos 6t - sin 6t)i + (10 + sin 6t + cos 6t)j + 5k
A. ? = 
B. ? = 3
C. ? = 
D. ? = 3
Mathematics
The problem that follows refers to triangle ABC.
?
If 
and 
cm, find C and a.
?
Apply the rules regarding the use of significant digits after all computations are complete.
?
A. 
cm
B. 
cm
C. 
cm
D. 
cm
E. 
cm
Mathematics