Find the slope of the curve at the point indicated.y = 10x - x2, x = 6
A. 12
B. -26
C. 10
D. -2
Answer: D
Mathematics
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Determine the area of the surface generated when the curve is revolved about the indicated axis.x = 4y3/2 - 
, for 2 ? y ? 7; about the y-axis
A. 
B. 
?
C. 
D. 
?
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Determine which values of x and y, if any, are not permissible. f(x, y) = 
A. x ? 0 B. y ? -4 C. x ? 3 and x ? -3 D. All values of x and y are permissible.
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Write the sum or difference as a product containing only sines and/or cosines.cos(6?) + cos(4?)
A. 2 cos(5?) sin ? B. 2 cos(5?) cos ? C. 2 cos(5?) D. 2 sin(5?) sin ?
Mathematics
Find fractional notation for the ratio. You need not simplify.In this right triangle, find the ratios of shortest length to longest length and of longest length to shortest length.
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Mathematics