Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution. x + y + z= 5 x - y + 3z=-73x + y + z=11
A. (3, -2, 4)
B. (-2, 3, 4)
C. (3, 4, -2)
D. (-2, 4, 3)
Answer: C
Mathematics
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Provide an appropriate response.What effect does a 270° rotation about the origin have on the equation of the hyperbola (x2/a2) - (y2/b2) = 1? Give the new equation.
A. 
- 
= 1
B. 
+ 
= 1
C. 
- 
= 1
D. 
- 
= 1
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Find ? to four significant digits for 0 ? ? < 2?.cot ? = -2.736
A. 5.933, 0.3504 B. 5.063, 1.921 C. 2.791, 5.933 D. 4.362, 2.791
Mathematics
Solve the problem.According to a recent poll, 1752 out of the 8760 people in a particular city were classified as obese. What is the relative frequenncy of obesity according to this poll?
A. 20% B. 80% C. 10% D. 40%
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. m + n
Mathematics