Solve the system of equations. If the system has no solution, say that it is inconsistent.
A. x = 
, y = - 
; (
, - 
)
B. x = 2, y = 3; (2, 3)
C. x = 2, y = 9; (2, 9)
D. inconsistent
Answer: D
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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
Factor:
Evaluate the expression for the given values. If necessary, round to the nearest tenth.
x = 7, y = 4
A. 
B. 
C. 
D. 
Solve the problem.Jim and Tammi climbed to the top of a 21,120-ft mountain. How many miles did they climb?
A. 8 mi B. 5 mi C. 4.5 mi D. 4 mi