Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them.6x + 9y = 9-2x - 4y = -4-8x + 9y = 9
A. x = -1, y = 2
B. Inconsistent
C. x = 0, y = 1
D. Unlimited: x = -1, y = 2; x = 0, y = 1
Answer: C
Mathematics
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Solve formula for the specified variable.P = 2L + 2W
for L
A. L = P - 2W
B. L = 
C. L = 
D. L = P - W
Mathematics
Solve the system.3w + x - 2y + z = 4-w + 3x + y - 3z = 44w - x + 3y + 2z = 17 w + x - 3y - z = 0
A. (-4, -2, 4, 3) B. (-1, 3, 3, 1) C. (4, -2, 0, 3) D. (4, -1, 2, -3)
Mathematics
Provide an appropriate response.
Shade the portion of the graph represented by the system of inequalities:y > 
x - 3
y ? -2xi + 1
A. 
B. 
C. 
D. 
Mathematics
Use the power rules for exponents to simplify the expression. Write the answer in exponential form.8(rt)5
A. 85r5t5 B. 8rt5 C. 8r5t D. 8r5t5
Mathematics