Use identities to write the expression as a function of x alone.cos (90° - x)
A. -cos x
B. cos x
C. sin x
D. -sin x
Answer: C
Mathematics
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Provide an appropriate response.A vertical analysis of an income statement shows the ratio of each item on the income statement to the:
A. total sales B. net sales C. owner's equity D. total income
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The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = 
A. y2 = 10x - 25 B. y2 = 25 - 10x C. x2 = 10y - 25 D. x2 = 25 - 10y
Mathematics
Simplify the quotient. Assume all variables represent positive real numbers.- 
A. - 2
B. - 
C. - 
D. - 
Mathematics
Solve the equation.4(1 + 2x) = 1024
A. {2} B. {8} C. {256} D. {-2}
Mathematics