Solve the equation.(2x + 1)(5x - 3) = 0
A. 
, - 
B. 2, 
C. - 
, 
D. 1, 2
Answer: C
Mathematics
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Solve the system by elimination. If the system is inconsistent or dependent, say so.-2x - 7y = -24-5x - 3y = -2
A. (2, -4) B. (2, 4) C. (-2, 4) D. (-2, -4)
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 63xy
B. 9x2y
C. 3x4y2
D. 3x2y
Mathematics
Write an expression for the ?nth term of the sequence 
, 
, 
, 
, ....
??
A. ?
B. ?
C. ?
D. ?
E. 
Mathematics
Convert the given number to scientific notation.7,800,000
A. 7.8 × 107 B. 7.8 × 10-7 C. 7.8 × 106 D. 7.8 × 10-6
Mathematics