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.
What will be an ideal response?
f = 
Mathematics
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Graph using a graphing calculator.2x2 - 4x - 10 = 0; x between 3 and 4
A. 3.4 B. 3.5 C. 3.2 D. 3.3
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Use technology to calculate det A.A = 
A. -68 B. -18 C. 68 D. -8
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Solve the equation.
= -x
A. ? B. {7, 1} C. {1} D. {7}
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Simplify the expression.(-39)4
A. Exponent: -4, base: 39 B. Exponent: 4, base: -39 C. Exponent: 4, base: 39 D. Exponent: -39, base: 4
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