Use implicit differentiation to find dy/dx and d2y/dx2.x2 + y2 = 9
A. 
= - 
; 
= - 
B. 
= - 
; 
= - 
C. 
= - 
; 
= - 
D. 
= 
; 
= 
Answer: C
Mathematics
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A. 0, 2
B. -2, 0
C. 0, 
D. - 
, 0
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Find the cofactor of the indicated element.a21
A. -1 B. 23 C. -23 D. 1
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Evaluate. Round dollar amounts to the nearest cent and other answers to the nearest thousandth when necessary.P
kn for P = $480, n = 3, r = 5%, k = 4
A. $77.16 B. $557.16 C. $555.66 D. $550.28
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Solve the problem.The sum of a student's three scores is 224. If the first is 13 points more than the second, and the sum of the first two is 29 more than twice the third, then what was the first score?
A. 73 B. 52 C. 65 D. 86
Mathematics