Evaluate the line integral.


Mathematics

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Identify which of these types of sampling is used: simple random, stratified, systematic, or convenience.A pollster uses a computer to generate 500 random numbers, then interviews the voters corresponding to those numbers.

A. Systematic B. Stratified C. Convenience D. Simple random

Mathematics

Find an approximation of the sum of the series accurate to two decimal places.

Mathematics

Solve the quadratic equation. Write complex solutions in standard form.x2 + x + 4 = 0

A.  ± 
B. -  ± 
C. -  ± 
D.  ± 

Mathematics

Expand by minors along the first column.

A. 9x - 12y + 7 B. -9x - 12y + 7 C. -9x + 12y + 7 D. -9x - 12y - 7

Mathematics