Solve the problem.In how many ways can 5 letters from the word PAYMENT be chosen and arranged?
A. 1260
B. 42
C. 2520
D. 35
Answer: C
Mathematics
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Find the reciprocal of the number.-8
A. 8
B. 
C. 0
D. - 
Mathematics
Find all the second order partial derivatives of the given function.f(x, y) = cos (xy2)
A. 
= - y2 sin xy2; 
= 2y
; 
= 
= 2
B. 
= -y4 cos xy2; 
= - 2x[2xy2 cos (xy2) + sin(xy2)]; 
= 
=
- 2y[xy2 cos (xy2) + sin(xy2)];
C. 
= y2 sin xy2; 
= 2[2y2 cos (xy2) - sin (xy2)] ; 
= 
= 2y[y2 cos (xy2) - sin (xy2)]
D. 
= - y2 sin xy2; 
= 2[ sin (xy2)- 2y2 cos (xy2)] ; 
= 
= 2y [sin (xy2)-y2 cos (xy2)]
Mathematics
Rationalize the denominator.
A. 
B. 
C. 
D. 
Mathematics
Use the order of operations to simplify the expression.(7 + 4)[3 + (5 + 5)]
A. 364 B. 143 C. 784 D. 41
Mathematics