Provide an appropriate response.A welder can make 12 welds in an hour. How many welds can 15 welders working at this rate make in an 8 hour day?
A. 180
B. 1,440
C. 1,280
D. 640
E. none of the above
Answer: B
Mathematics
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Provide an appropriate response.If n is even, under what condition is 
negative?
A. never B. when a is zero C. when a is negative D. when a is positive
Mathematics
Solve the equation.x(6x - 5) = (6x + 1)(x - 5)
A. 
B. {6}
C. 
D. 
Mathematics
Combine like terms.16.7x - 3.5 - 9.9x + 13
A. 7.8x + 9.5 B. 6.8x + 10.5 C. 6.8x + 9.5 D. 16.3x
Mathematics
Solve the equation.10y = 5y + 4 + 4y
A. -4 B. 4 C. -40 D. 40
Mathematics