Find the expected value of the random variable in the experiment.Five rats are inoculated against a disease. The number contracting the disease is noted and the experiment is repeated 20 times. Find the probability distribution and the expected number of rats contracting the disease.
Total: 
A. 0.9
B. 2.4
C. 2.3
D. 1
Answer: C
Mathematics
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Graph the function.Use the graph of log5x to obtain the graph of f(x) = 
log5x.
A. 
B. 
C. 
D. 
Mathematics
Evaluate the series, if it converges.
A. 138 B. Does not converge. C. 161 D. - 138
Mathematics
Evaluate the expression.-(90) + (-13)0
A. -2 B. -4 C. 1 D. 0
Mathematics
Determine whether the following matrix is in row-echelon form. If it is, determine if it is also in reduced row-echelon form.
?
?
?
A. Row-echelon form B. Not in row-echelon form C. Reduced row-echelon form
Mathematics