Solve the system of equations by using the inverse of the coefficient matrix. x + y + z = 3 x - y + 5z = 175x + y + z = 7
A. x = 3, y = -1, z = 1
B. x = 1, y = -1, z = 3
C. x = 3, y = 1, z = -1
D. No inverse, no solution for system
Answer: B
Mathematics
You might also like to view...
Solve the problem.The sum of twice a number and 14 less than the number is the same as the difference between -22 and the number. What is the number?
A. -3 B. -4 C. -1 D. -2
Mathematics
Factor completely.-2w2 - 24w - 54
A. -(w - 9)(w - 3) B. -(2w + 18)(w + 3) C. -2(w + 9)(w + 3) D. prime
Mathematics
Perform the indicated operation by hand.0.9 ÷ 0.06
A. 16 B. 15 C. 1.5 D. 4
Mathematics
Solve and graph.|x - 12| > 3
A. {x
-15 < x < -9}, or (-15, -9)
B. {x
x > 15}, or (15, ?)
C. {x
9 < x < 15}, or (9, 15)
D. {x
x < 9 or x > 15}, or (-?, 9) ? (15, ?)
Mathematics