Rationalize the denominator of the expression. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the system of equations using the inverse of the coefficient matrix.2x + 8y + 6z = 204x + 2y - 2z = -23x - y + z = 11
A. x = -1, y = 2, z = 1 B. x = 2, y = 1, z = 6 C. No solution D. x = 2, y = -1, z = 4
Mathematics
Find the limit.
A. 0
B. 
C. 1
D. 4
Mathematics
A child weighs 7.7 kg and is 40 cm tall. The recommended dosage of a medication is 5 mg/m2. Calculate the correct dosage of this medication for the child.
A. 0.43 mg B. 0.49 mg C. 1.55 mg D. 1.45 mg
Mathematics
Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Using the critical-path algorithm to schedule this project with six processors results in a finishing time of
A. 19 hours. B. 22 hours. C. 23 hours. D. 18 hours. E. none of these
Mathematics