Solve the problem.The focal length f of a lens with index of refraction n is 
= (n - 1)
where R1and R2 are the radii of curvature of the front and back surfaces of the lens. Express f as a rational expression.
A. f = 
B. f = 
C. f = 
D. f = 
Answer: B
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Find the slope of the linear regression equation for the following table of values. x 1.02 3.43 4.66 6.76 y 24.71 14.77 10.09 1.59
What will be an ideal response?
Provide an appropriate response.(29 × 18) × 13 = 678629(18 × 13) = 6786This is an example of the 
.
A. commutative property of addition B. commutative property of multiplication C. associative property of multiplication D. associative property of addition
Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = (x2 + y2)i + (x - y)j; C is the rectangle with vertices at (0, 0), (8, 0), (8, 4), and (0, 4)
A. 96 B. -96 C. 160 D. 0
Find the mean for the group of data items. Round to the nearest hundredth, if necessary.10, 12, 8, 7, 6, 9, 11, 8
A. 10.14 B. 9 C. 8.88 D. 7.88