Solve the equation.2(5 - 3x) = 
A. {-3}
B. {8}
C. {3}
D. 
Answer: C
Mathematics
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Solve the problem.A heat engine is a device that converts thermal energy into other forms. The thermal efficiency, e, of a heat engine is defined by 
where Qh is the heat absorbed in one cycle and Qc, the heat released into a reservoir in one cycle, is a constant. Find 
.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Subtract.(10x2 - 1) - (-x3 + 6x2 + 4)
A. 11x3 + 6x2 - 5 B. x3 + 16x2 + 3 C. x3 + 4x2 - 5 D. 11x3 + 5x2 - 4
Mathematics
Perform the exponentiation.(-5)3
A. 15 B. 125 C. -15 D. -125
Mathematics
Graph the linear function. Give the domain and range.h(x) = -5
A. Domain: (-?, ?)
Range: {-5}
B. Domain: {-5}
Range: (-?, ?)
Mathematics