Solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = -6, y = 7, z = 12
B. x = 6, y = 7, z = 1
C. x = 6, y = 1, z = 7
D. Inconsistent
Answer: B
Mathematics
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Find the volume of the solid. Round to two decimal places when necessary.Right trapezoidal prism
A. 4664.80 in3 B. 1166.20 in3 C. 2332.40 in3 D. 1509.20 in3
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Solve the system by the elimination method. 7x + 8y = 48 2x - 5y = -30
A. ? B. {(0, 6)} C. {(-1, 7)} D. {(0, 7)}
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Let X be a continuous random variable on a ? x ? b with probability density function f(x). Then the median of the x-values is that number m for which 
.Find the median.f(x) = 
; 2 ? x ? 10
A. 6
B. 
C. 8
D. 2
Mathematics