Evaluate the determinant.
A. -5
B. -23
C. -13
D. 5
Answer: A
Mathematics
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Evaluate the definite integral using the definition.
A. 25
B. 
C. 15
D. 5
Mathematics
List the numbers that precede and follow the given number in the given base.689
A. 679; 1019 B. 669; 729 C. 679; 709 D. 679; 719
Mathematics
Solve the problem. Round to the nearest hundredth, if necessary.The average weekly income of teachers in one school district is $760 with a standard deviation of 
Find the percentage of teachers earning more than $820 a week.
A. 78.81% B. 81.33% C. 80% D. 21.19%
Mathematics
Divide and simplify.24 ÷ 
A. - 
B. -30
C. - 
D. -6
Mathematics