Simplify the expression.
- 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Complete the sentence so the result is an identity. Let x be any real number.1 - = sin2x
A. cot2x B. tan2x C. cos2x D. sec2x
Mathematics
Complete the table of values for the given equation.y = -5
A. 0; 0; 0 B. 0; 2; 4 C. 3; 3; 3 D. -5; -5; -5
Mathematics
Solve the problem.The loudness of a sound can be approximated by the formula d = 10 log10
, where d is the number of decibels. The higher the value of d, the louder the sound. Find the number of decibels when 
and 
A. 10,000 decibels B. 4 decibels C. 14 decibels D. 40 decibels
Mathematics
Solve the problem.The profit P for selling x items is given by the equation P(x) = 2x - 500. Express the sales amount x as a function of the profit P.
Fill in the blank(s) with the appropriate word(s).
Mathematics