Solve the equation or inequality graphically. Express solutions or endpoints of intervals rounded to the nearest hundredth, if necessary.
+ 
= 16
A. {13}
B. {-13, 3}
C. {13, -3}
D. ?
Answer: C
Mathematics
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Find the radius of convergence and the interval of convergence of the power series.
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Find the least common denominator (LCD).
, 
, 
A. 60 B. 36 C. 90 D. 180
Mathematics
Graph the ellipse and locate the foci.
+ 
= 1 
A. foci at (0, 2
) and (0, -2
)
B. foci at (0, 5) and (0, -5)
C. foci at (0, 7) and (0, -7)
D. foci at (5, 0) and (-5, 0)
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Find the slope of the line containing the two points.(6, 1) and (8, 1)
A. 2
B. 0
C. - 
D. undefined
Mathematics