Solve the system using determinants. 6x - 3y + 8z = 89-2x + 5y - 6z = -33 8x - 8y - 3z = 3
A. (5, 7, 5)
B. (9, 3, 7)
C. (8, 5, 7)
D. (8, -5, -7)
Answer: C
Mathematics
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Solve the problem.For a certain drug, the rate of reaction in appropriate units is given by R'(t) = 
+ 
, where t is measured in hours after the drug is administered. Find the total reaction to the drug from t = 4 to t = 9.
A. 3.22 B. 6.44 C. 6.26 D. 1.9
Mathematics
Integrate the function.
A. 
B. 2tan-1 7
C. 2sin-1 7
D. 2tan-1 
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Write the phrase as a mathematical expression. Use x to represent the number. Combine like terms if possible.Four times a number, added to the sum of the number and six.
A. 4x + 6 B. 5x C. 10x D. (x + 6) + 4x; 5x + 6
Mathematics