Solve the system using the matrix inverse method. 7x - y + 8z = 26-5x + 2z = 1 5y + z = 28
A. {(1, 3, 5)}
B. ?
C. {(-1, 5, 2)}
D. {(1, 5, 3)}
Answer: D
Mathematics
You might also like to view...
Plot the point whose polar coordinates are given.(2, -5?/4)
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.What angle is twice its complement?
A. 60° B. 45° C. 30° D. 90°
Mathematics
Solve the equation by the quadratic formula.6x2 + 10x + 1 = 0
A. 
B. 
C. 
D. 
Mathematics
The following table shows the earnings for the Juarez family last year. Use this information to answer the question.MonthEarningsMonthEarningsJan.$1400July$1300Feb.$1150Aug.$2450Mar.$2950Sept.$2500Apr.$2300Oct.$2000May$1650Nov.$2350June$2700Dec.$2400If 
of the family income is spent on entertainment, how much did they spend for entertainment last year?
A. $4440 B. $3150 C. $3772.50 D. $4050
Mathematics