Solve. 5(x + 7) = 10x + 14
A. -1.8
B. -4.2
C. 1.8
D. 4.2
Answer: D
Mathematics
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Multiply.-8x7(-2x5 - 11x4)
A. 104x12 + 104x11 B. 16x12 + 88x11 C. 104x7 D. 16x12 - 11x4
Mathematics
Solve by the quadratic formula. If there are no real roots, say so.
- 
= 
A. No real solution
B. y = 
C. y = 
D. y = - 
, y = 
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
Solve the rational equation.
= 
+ 
A. {-3}
B. 
C. {3}
D. 
Mathematics