Solve using Cramer's rule, if possible. If it is not possible, state whether the system is inconsistent or has infinitely many solutions.
A. (0, -6)
B. Inconsistent
C. Infinitely many solutions
D. (1, -7)
Answer: B
Mathematics
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Find the special product.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Evaluate the integral.
dx
A. 
- ln
- 5 tan-1 x + ln(x2 + 1) + C
B. 
- ln 
+ 
ln(x2 + 1) + C
C. 
- 3 tan-1 x + 
ln(x2 + 1) + C
D. 
- ln
- 3 tan-1 x + 
ln(x2 + 1) + C
Mathematics
Find the intersection.x + y + z = 8, x + y = 15
A. x = -t, y = 15 + t, z = -7 B. x = -t, y = 15 + t, z = 7 C. x = -1, y = 1 + 15t, z = -7t D. x = t, y = 15 - t, z = -7
Mathematics
Evaluate the expression without using a calculator.log77
A. 
B. 1
C. 7
D. 0
Mathematics