Solve the problem.Determine whether the ordered triple (2, 9, -4) is a solution of the system of equations.2x - 5y - 9z = -5 x + y + z = 73x - y + 5z = 35
A. Yes
B. No
Answer: B
Mathematics
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Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. infinitely many solutions; {
x = 7} or {
x = -6}
B. {(-6, 7)}
C. no solution; ?
D. {(7, -6)}
Mathematics
Find a Cartesian equation for the line whose polar equation is given.r cos
= 2
A. y = 
x - 2
B. y = 
x + 4
C. y = 
x - 2
D. y = x - 4
Mathematics
Solve the problem.Evaluate 
at (x, y, z) = (3, 3, 4) for the function u = p2q2 - r; p = y - z, 
A. 56 B. -84 C. 224 D. 112
Mathematics
Perform the indicated operation and express with the proper accuracy and precision. The first number given is approximate and the second number is exact. (Use calculator if needed).9.37 ÷ 6281
A. 0.00149 B. 0 C. 0.0 D. 0.0014918
Mathematics