Solve using the elimination method. Use a graphing calculator to check your answer. x + 9y = -48 9x + 8y = -67
A. (-4, -4)
B. (-3, -5)
C. (3, -4)
D. No solution
Answer: B
Mathematics
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Combine like terms in the expression. Answer "not possible" if terms cannot be combined.78x - y
A. 15xy B. not possible C. 30x - y D. 56y
Mathematics
Simplify by factoring.
A. 4xy
B. 4x
C. 4xy2
D. 4x2
Mathematics
Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.csc x = 1 + cot x
A. 
B. No solution
C. 
, 
D. 
Mathematics
The data in the figure below represents the annual salaries of 200 professional musicians.
Approximately how many musicians make $40,000 or less?
A. 54 B. 27 C. 50 D. 100 E. none of these
Mathematics