Provide an appropriate response.Find the sum of the series 
by expressing 
as a geometric series, differentiating both sides of the resulting equation with respect to x, multiplying both sides by x, differentiating again, and replacing x by 
.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the proportion.
= 
A. 3 B. 7 C. 9 D. 6
Mathematics
Divide and simplify.
A. 
B. 
C. y9
D. 
Mathematics
Identify the type of sampling described by the proposal.A writer for an art magazine randomly selects and interviews fifty male and fifty female artists.
A. cluster sample B. stratified sample C. simple random sample D. systematic sample E. convenience sample
Mathematics
Find the nth term and the indicated term of the arithmetic sequence whose initial term, a, and common difference, d, are given.a = 10; d = 2an = ?; a13 = ?
A. an = 8 - 2n; a13 = 34 B. an = 10 + 2n; a13 = 34 C. an = 8 + 2n; a13 = 34 D. an = 8 + 2n; a13 = 28
Mathematics