Solve by elimination and check.5x + y = -43x + 2y = 4
A. No solution
B. (- 
, 
)
C. (
, - 
)
D. (
, 
)
Answer: B
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Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)1.5x + 1.1y - 5.0z = 1.64.2x - 5.6y + 0.3z = -3.92.2x - 4.4y - 1.3z = 10.7
A. {(-37.0, -25.3, -18.3)} B. {(-14.8, -10.1, -7.3)} C. {(-7.4, -5.1, -3.7)} D. {(-29.6, -20.2, -14.6)}
Multiply the expressions.(7x - 5y)2
A. 49x2 - 70xy + 25y2 B. 49x2 + 25y2 C. 7x2 + 25y2 D. 7x2 - 70xy + 25y2
Solve the system analytically.
A. 
B. 
C. 
D. ?
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = 8, y = 4, z = 2; (8, 4, 2) B. x = 9, y = 2, z = 2; (9, 2, 2) C. x = 4, y = 2, z = 4; (4, 2, 4) D. x = 8, y = -4, z = -2; (8, -4, -2)