Solve the system of equations by the elimination method. x + 8y = -7-2x + 7y = -32
A. (9, -2)
B. (-9, -1)
C. (8, -1)
D. no solution
Answer: A
Mathematics
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Solve the formula for the indicated variable.
Orbital velocity: 
Mathematics
Evaluate the improper integral or state that it diverges.
A. 
B. 
C. 
D. diverges
Mathematics
Find the x- and y-intercepts for the equation. Then graph the equation.-3x - 6y = 6
A. (-1, 0), (0, 2)
B. (2, 0), (0, -1)
C. (-1, 0), (0, -2)
D. (-2, 0), (0, -1)
Mathematics
Solve the system of equations using Cramer's rule.- 
x + 5y - 2z = 93x + 
y + z = -1 x - 3y + 3z = 0
A. (0, 0, 4) B. (0, 3, 5) C. (-3, 3, 4) D. (-3, 0, 5)
Mathematics