Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.an = an-1 - 4, a1 = 32
A. an = 32n + 36, a20 = 676
B. an = 28n + 32, a20 = 592
C. an = -4n + 36, a20 = -44
D. an = -4n + 28, a20 = -52
Answer: C
Mathematics
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A. 
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Find the second derivative of the function.y = 
A. 
= 1 + 
B. 
= 2 - 
C. 
= 2 + 
D. 
= 2x - 
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Use implicit differentiation to find dy/dx and d2y/dx2.x2 + y2 = 7
A. 
= - 
; 
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B. 
= 
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C. 
= - 
; 
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D. 
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Find the value. Give an approximation to four decimal places.log 273
A. 5.6095 B. 2.4362 C. 2.4346 D. 2.4378
Mathematics