Simplify the expression.
?
?
A. 
B. 5
C. 
D. 
E. 
Answer: A
Mathematics
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Solve.The sum of two numbers is 30. Their difference is 12. What are the numbers?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the exact value of the indicated trigonometric function of the angle ? in the figure. Rationalize the denominator where necessary.Find sec ?.
A. 
B. 
C. 
D. 
Mathematics
Solve.|19x - 9| < -2
A. 
B. 
? 
C. (-?, ?)
D. No solution
Mathematics
For the pair of functions, find the indicated sum, difference, product, or quotient.f(x) = 4x - 9, g(x) = 6x + 4Find (fg)(x).
A. 24x2 - 50x - 36 B. 10x2 - 38x - 5 C. 24x2 - 36 D. 24x2 - 38x - 36
Mathematics