Solve the problem using Gaussian elimination.Three machines together produce 170 parts each hour. Twice the production of the second machine is 
more than the sum of the production of the other two machines. If the first machine operates for 
and the others operate for 9 hours, 
are produced. Find the production rate of each machine.
A. 60 parts/h, 30 parts/h, 80 parts/h
B. 60 parts/h, 80 parts/h, 30 parts/h
C. 80 parts/h, 60 parts/h, 30 parts/h
D. 30 parts/h, 60 parts/h, 80 parts/h
Answer: D
Mathematics
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Solve the equation 
. Restrict your attention to the horizontal span of 0 to 5. Round your answer to two decimal places if necessary.
?
A. 1.32 B. 1.5 C. 2.77 D. 3.24
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Find the nonreal complex solutions of the equation.2x2 - 3x + 6 = 0
A. 
B. 
C. 
D. 
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Find the difference and simplify the answer. 
- 
A. 
B. 
C. 1
D. 11
Mathematics
Find the equation of the line through the given pair of points in standard form using only integers.(-4, -4) and (4, 3)
A. 7x - 8y = 12 B. 7x - 4y = 4 C. 7x - 8y = -16 D. 7x - 8y = 4
Mathematics