What angle is opposite AC ?
(a) ?A
(b) ?B
(c) ?ABC
(d) ?CBD
(c) ?ABC
Mathematics
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Write the sum using summation notation.0 + 2 + 6 + 12 + 20
A. 
B. 
C. 
D. 
Mathematics
Determine whether the pair of lines is parallel, perpendicular, or neither. 9x + 3y = 1227x + 9y = 38
A. parallel B. perpendicular C. neither
Mathematics
Solve the given equation for x.log2
= x
A. 
B. 
C. 
D. 
Mathematics
Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable. 4x - 5y - 7z = -1 -7x + 2y - 8z = 1 20x - 25y - 35z = -5
A. {(-1, 1, -5)} B. ? C. {(5, 5, -1)} D. {(-5z + 2 , 4z- 25 , z)}
Mathematics