Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.5x + 5y - 3z = -1720x + 21y - 11z = -610x + 11y - 5z = 15
A. 
B. 
C. 
D. No solution
Answer: D
Mathematics
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Add or subtract. Assume all variables represent positive real numbers.
+ 
+ 
+ 
A. 157
+ 7
B. 17
+ 7
C. 
+ 
+ 7
D. 17
+ 
+ 
Mathematics
Determine whether the given equation is rational or non-rational.
= x2
A. Rational B. Non-rational
Mathematics
Determine if the sequence is geometric. If the sequence is geometric, find the common ratio.-15, -19, -23, -27, . . .
A. yes, -4 B. no C. yes, -12 D. yes, 4
Mathematics
Divide.4,063 ÷ 17
A. 240 B. 239 R 8 C. 240 R 7 D. 239
Mathematics