Solve the equation.2(3a - 1)2 + 7(3a - 1) + 3 = 0
A. - 
, - 
B. - 
, 
C. - 
, 
D. - 
, -3
Answer: B
Mathematics
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Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 9x - y + 4z = 20 2x + 4y + 3z = 15 4x - 9y + z = -9
A. {(-2, 2, 4)} B. ? C. {(2, 1, 2)} D. {(2, 2, 1)}
Mathematics
Find the mode or modes (if any).65, 25, 65, 13, 25, 29, 56, 65
A. 42.5 B. 42.9 C. 65 D. no mode
Mathematics
Find the exact interest. Use 365 days in a year, and use the exact number of days in a month. Round to the nearest cent, if necessary.$6340 at 7.5% for 51 days
A. $475.50 B. $62.01 C. $67.36 D. $66.44
Mathematics
Solve the system.x + 4y + 2z = -11 3y + 3z = -3 z = 3
A. (-1, 3, -4) B. (-1, -4, 3) C. (3, -4, -1) D. No solution
Mathematics