Solve using Cramer's rule. 7a- 5c = -3 2a + 6b - 6c = -6-5a - 2b= -42
A. (6, 9, 6)
B. (6, 6, 9)
C. (7, 4, 9)
D. (6, -6, -9)
Answer: B
Mathematics
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Find the volume of the indicated region by an iterated integration.The region that lies under the surface 
and above the triangle enclosed by the lines 
, and 
A. 30000
B. 
C. 
D. 
Mathematics
Find the extreme values of the function subject to the given constraint.
A. Maximum: 64 at 
minimum: -64 at 
B. Maximum: 128 at 
minimum: -128 at 
C. Maximum: 64 at 
minimum: -128 at 
D. Maximum: 128 at 
minimum: -64 at 
Mathematics
Find all solutions.10x3 + 70x2 + 120x = 0
A. {-3, -4}
B. 
C. {0, -3, -4}
D. {0, 3, 4}
Mathematics
Evaluate the integral.
A. 
B. 624
C. 156
D. 72
Mathematics