Multiply.
? 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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If 
, what is the value of 
? Round your answer to two decimal places if necessary.
?
A. 16.96 B. 15.8 C. 21.84 D. None of the above
Mathematics
Perform the indicated operation and write the answer in lowest terms.
+ 
- 
A. 1
B. 
C. 
D. 
Mathematics
Solve the problem.Two friends live 34.5 mi apart. They cycled from their homes, riding toward one another and meeting 
hr later. If one friend cycled 1 mph faster than the other, what were their two rates?
A. 12 mph and 13 mph B. 9 mph and 10 mph C. 11 mph and 12 mph D. 10 mph and 11 mph
Mathematics
Find the expected value for the random variable x having this probability function.
A. 45 B. 55 C. 50 D. 50.5
Mathematics