Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.
A. (0, 3, -3)
B. no solution
C. (0, 3, 0)
D. (0, 0, 3)
Answer: C
Mathematics
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Find the circumference of the circle with the given radius or diameter.d = 19.5 ft
A. 123 ft B. 61.26 ft C. 61.3 ft D. 122.5 ft
Mathematics
Determine whether the pair of lines is parallel, perpendicular, or neither.y = - 
x + 2y = 
x + 2
A. Parallel B. Perpendicular C. Neither
Mathematics
Solve the equation.
+ 42 = 80y - 
- 79y
A. 10 B. -10 C. -64 D. 64
Mathematics
Solve the system of equations using substitution.
A. x = -3, y = 4; x = -4, y = 3 or (-3, 4), (-4, 3) B. x = 3, y = -4; x = 4, y = -3 or (3, -4), (4, -3) C. x = -3, y = -4; x = -4, y = -3 or (-3, -4), (-4, -3) D. x = 3, y = 4; x = 4, y = 3 or (3, 4), (4, 3)
Mathematics