Write a general formula to describe the variation.The illumination I produced on a surface by a source of light varies directly as the candlepower c of the source and inversely as the square of the distance d between the source and the surface.
A. I = 
B. I = kcd2
C. I = 
D. I = 
Answer: D
Mathematics
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Simplify the radical. Assume that all variables represent positive real numbers.
A. 
B. 3
C. 
D. 
Mathematics
Simplify the expression involving rational exponents.- 
1/2
A. - 
B. 
C. - 
D. Not a real number
Mathematics
Solve.Find an equivalent expression for sin 4x in terms of function values of x.
A. 8 sin x cos3 x - 4 sin x cos x B. 8 sin x - 4 sin x cos x C. 8 cos4 x - 2 sin x cos x D. 8 sin x cos3 x - 4 sin3 x cos x
Mathematics
Name the property used to go from step to step indicated by an a), b), c), or d).
What will be an ideal response?
Mathematics