Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.8w + 7x - 5y - 4z = -217w + 5x - 8y - 4z = -298w + 7x + 6y + 5z = 14-5w - 4x + 7y + 8z = 22
A. (2, -3, 4, -1)
B. (2, 3, -4, -2)
C. (-1, 4, -5, 2)
D. No solution
Answer: A
Mathematics
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Write the Mayan numeral as a Hindu-Arabic numeral.
A. 1066 B. 2662 C. 2742 D. 2502
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Solve the triangle.b = 2, c = 3, A = 95°
A. a = 3.75, B = 52.9°, C = 32.1° B. a = 3.75, B = 32.1°, C = 52.9° C. a = 2.75, B = 52.9°, C = 32.1° D. a = 4.75, B = 32.1°, C = 52.9°
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Find a unit vector that has the same direction as the given vector.t = 
A. 
B. 
C. 
D. 
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Simplify the expression.(
+ 
)(
- 7
)
A. m - 7n
B. m2 - 6mn - 7n2
C. m - 6
- 7n
D. 
- 6
- 7
Mathematics