Simplify the expression by performing the indicated operations.
? 
- 4
A. 8 - 20
B. -
C. -16
D. 16 - 20
Answer: C
Mathematics
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Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.8w + 8x - 6y - 2z = -307w + 6x - 9y - 2z = -388w + 8x + 7y + 3z = 17-6w - 2x + 8y + 8z = 18
A. (2, 3, -4, -2) B. (2, -3, 4, -1) C. (-1, 4, -5, 2) D. No solution
Mathematics
Solve the equation 
for ?y. Round your answers to two decimal places, if necessary.
?
A. 
or 
B. 
or 
C. 
or 
D. None of the above.
Mathematics
Provide an appropriate response.Use a calculator to multiply and reduce answers to lowest terms: 
A. 
B. 126
C. 
D. 
Mathematics
Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
Mathematics