Solve the problem.The table indicates typical piston angles for various engine types. Use this information to zoom through the problem. 
Which engine type requires an acute piston angle?
A. flat engines
B. V6 engines
C. V8 engines
D. V6 and V8 engines
Answer: D
Mathematics
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Find the product and simplify.
? 
A. 
B. 
C. 
D. 1
Mathematics
Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
A. 
B. 
+ 
i
C. 
i
D. 
- 
i
Mathematics
Solve the problem.The matrices give points and rebounds for five starting players in two games. Find the matrix that gives the totals.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Stevie bought a stereo for $290 and put it on sale at his store at a 65% markup rate. What was the retail price of the stereo? Round to the nearest cent if necessary.
A. $378.50 B. $478.50 C. $580.00 D. $390.00
Mathematics