Use the Gauss-Jordan method to solve the system of equations. 3x + 3y = 6 4x + 2y = -2
A. (-3, -5)
B. (-3, 5)
C. (5, -3)
D. No solution
Answer: B
Mathematics
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Solve.20% of what number is 32?
A. 6.4 B. 62.5 C. 640 D. 160
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Solve the problem.Jim has gotten scores of 62 and 91 on his first two tests. What score must he get on his third test to keep an average of 80 or better?
A. at least 77 B. at least 76.5 C. at least 87 D. at least 85
Mathematics
A function and its first and second derivatives are given. Use these to find any vertical asymptotes.
?
A. 
B. 
C. 
D. 
E. no vertical asymptotes
Mathematics
You are given the shape of the vertical ends of a trough that is completely filled with water. Find the force exerted by the water on one end of the trough. (The weight density of water is 62.4 lb/ft3.)
a. 780 lb
b. 312 lb
c. 156 lb
d. 1,560 lb
Mathematics