Perform the indicated operation and simplify. Write the answer in the form a + bi.
A. - 
i
B. 
i
C. - 
i
D. 
i
Answer: C
Mathematics
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Evaluate the integral. The integral may not require integration by parts.
dx
A. 3ex3 + C
B. 
ex2 + C
C. 
ex3 + C
D. 
ex3 + C
Mathematics
Provide an appropriate response.The random variable X has density function f(x) = 
Find the cumulative distribution function F over 
.
What will be an ideal response?
Mathematics
Perform the indicated operation and simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Factor completely.7x2 - 21xy - 28y2
A. (7x - 7y)(x + 4y) B. 7(x + y)(x - 4y) C. prime D. 7(x - y)(x + 4y)
Mathematics