Find the inverse, if it exists, for the matrix.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find a linear equation whose graph has the indicated slope and passes through the given point.slope 4, point (-2, -7)
A. y = 2x - 15 B. y = 4x + 1 C. y = 2x + 15 D. y = 4x + 15
Mathematics
Multiply.(3p + 7q)(3p - 7q)(9p2 + 49q2)
A. 27p3 + 189p2q + 441pq2 + 343q3 B. 27p3 - 189p2q - 441pq2 + 343q3 C. 81p4 + 2401q4 D. 81p4 - 2401q4
Mathematics
Find all the first order partial derivatives for the following function.f(x, y, z) = z(ex)y
A. 
= zyexy; 
= zxexy; 
= exy
B. 
= zxexy; 
= zyexy; 
= exy
C. 
= zyexy; 
= zxexy; 
= zexy
D. 
= zexy; 
= zexy; 
= exy
Mathematics
Factor completely. If the polynomial is prime, then state this as your answer.1 - 81y4
A. (1 + 9y2)(1 + 3y)(1 - 3y) B. (1 + 9y2)(1 - 9y2) C. prime D. (1 + 3y)2(1 - 3y)2
Mathematics