Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set. x + y = 78x + 8y = 56
A. Cramer's rule does not apply since D = 0; ?
B. {(0, 0)}
C. Cramer's rule does not apply since D = 0; {(7 - y, y)}
D. {(1, 6)}
Answer: C
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A. Alamo, Dolly, Brushy, Chet B. Brushy, Alamo, Dolly, Chet C. Alamo, Brushy, Dolly, Chet D. Brushy, Dolly, Alamo, Chet
Find the slope and the y-intercept of the line.x + 4y = 2
A. m = 4; y-intercept: (0, 8)
B. m = -4; y-intercept: (0, 0)
C. m = - 
; y-intercept: 
D. m = 
; y-intercept: (0, 8)
Find the probability to the nearest hundredth that the random variable of the probability density function has a value greater than the mean.f(x) = 
; [2, 8]
A. 0.50 B. 0.48 C. 0.53 D. 0.45