Use the quadratic formula to solve the quadratic equation.x2 = 9 - 4x
A. x = -2 ± 2
B. x = -1 ± 
C. x = -2 ± 
D. x = 2 + 
Answer: C
Mathematics
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Solve the system by graphing.3x - 2y = 143x + 2y = 22
A. {(6, 2)} B. {(3, 13)} C. {(2, 6)} D. ?
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Identify the type of sampling described by the proposal.A sample consists of every 30th worker from a group of 5000 workers.
A. stratified sample B. convenience sample C. simple random sample D. cluster sample E. systematic sample
Mathematics
Add the integers.-10 + (-13)
A. -23 B. -24 C. -3 D. 23
Mathematics
Solve the absolute value equation.|8 - 9x| = 5
A. x = 
, 
B. x = - 
, - 
C. x = 
, 
D. x = - 
, - 
Mathematics