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. 
= Qh - Qc
D. 
= 
Answer: D
Mathematics
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Find the intersection of the sets.{a, e, o, u} ? ?
A. {a} B. ? C. {a, e, o, u} D. {u}
Mathematics
Solve the problem. Round to the nearest hundredth of a percent if needed.During July in Jacksonville, Florida, it is not uncommon to have afternoon thunderstorms. On average, 8.7 days have afternoon thunderstorms. What is the probability that a randomly selected day in July will not have a thunderstorm?
A. 71.00% B. 71.94% C. 91.30% D. 28.06%
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Find the limit if it exists. 
What will be an ideal response?
Mathematics