The polar coordinates of a point are given. Find the rectangular coordinates of the point.
A. 
B. 
C. 
D. 
Answer: B
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Determine the population and the sample.Each month a pollster questions by phone a random sample of about 10,000 people aged 21 and older living in Country X on political topics.
A. Population: 10,000 people aged 21 and older living in Country X; Sample: 21 people who get questioned B. Population: all people living in Country X; Sample: 21 people who get questioned C. Population: 10,000 people living in Country X; Sample: 21 people who get questioned D. Population: people aged 21 and older living in Country X; Sample: 10,000 people who get questioned
Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + 2y2 = 8x2 - y2 = 1
A. 
, 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. no real solution
Determine whether the graphed relation is a function.
A. function B. not a function
Determine the real solutions to the system of nonlinear equations.2y - x = 5x2 + y2 - 25 = 0
A. 
, 
B. (-5, 0), (3, 4)
C. (5, 0), (-5, 0), (3, 4)
D. 
, 
, 