Find dy for the given values of x and ?x.y = 2x5 - 3x2 + x - 1; x = -1, ?x = 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the system of equations.3x - 5y - 7z = 56x + 2y - 8z = 215x - 25y - 35z = -9
A. ? B. {(5, 2, -9)} C. {(5, 5, -1)} D. {(x,y,z) | 3x - 5y - 7z = 5}
Mathematics
106 ÄÄÄ = 103
a. 1018 b. 109 c. 106 d. 103 e. 102
Mathematics
Simplify.
+ 
- 
A. - 
B. - 
C. 
D. 
Mathematics
Use the choices below to fill in the blank. Choices may be used more than once or not at all.
A formula for calculating a combination of n items taken r at a time is 
.
A. 
B. 
C. 
D. 
Mathematics