Use Gauss-Jordan elimination to find the solution. Write the solution as an ordered pair. x + 7y = 78x - 3y = -3
A. (1, 1)
B. (1, 0)
C. (0, 0)
D. (0, 1)
Answer: D
Mathematics
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Solve the equation.(5a + 4)2 = 4a2
A. 
, - 
B. - 
, 
C. - 
, - 
D. - 
Mathematics
Add or subtract. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Mathematics
Find any values of the variables that must be excluded.
A. z = 9 B. z = 0 C. z = -9 D. Defined for all real numbers
Mathematics
Use the distributive property to rewrite the expression, then simplify if possible8(2x + 7y + 7)
A. 16x + 7y + 7 B. 16x + 56y + 7 C. 16x + 7y + 56 D. 16x + 56y + 56
Mathematics