Find all the numbers for which the rational expression is defined.
A. x ? 2 and x ? -5
B. x ? 9 and x ? -9
C. x ? -2 and x ? 5
D. x ? 0
Answer: C
Mathematics
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Convert to logarithmic form.52 = 25
A. log52 = 25 B. log225 = 5 C. log525 = 2 D. log255 = 2
Mathematics
Find the standard deviation for each data set. Round to one more place than the data.64, 71, 56, 71, 51, 41, 52, 22, 72
A. 17.7 B. 6.9 C. 15.6 D. 16.5
Mathematics
Suppose events A, B, and C are independent and
?
?
Find the probability 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Use the given matrices to compute the given expression.Let A =
and B =
. Find 4A + B.
A. 
B. 
C. 
D. 
Mathematics