Simplify the expression. Write the result using positive exponents only.-5-4
A. 625
B. -625
C. 
D. - 
Answer: D
Mathematics
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = -6 and x = 6. The cross sections perpendicular to the x-axis between these planes are squares whose diagonals run from the semicircle y = - 
to the semicircle y = 
.
A. 
B. 
C. 1152
D. 576
Mathematics
Without graphing the function, determine its amplitude or period as requested.y = -2 cos 
xFind the period.
A. 
B. 6?
C. -2
D. 
Mathematics
Find the curvature of the space curve.r(t) = ti + (sinh t)j + (cosh t)k
A. ? = cosh2 t
B. ? = sinh2 t
C. ? = 
D. ? = 
Mathematics
Evaluate.(-1)4
A. 1 B. -4 C. -1 D. 4
Mathematics