Factor completely.9k2 - 49m2
A. (3k + 7m)2
B. (3k - 7m)2
C. (3k + 7m)(3k - 7m)
D. (9k + m)(k - 49m)
Answer: C
Mathematics
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Multiply. Assume that all variables represent non-negative real numbers.
(
+ 
)
A. 
B. 5
+ 5
C. 10
D. 
+ 
Mathematics
Find the limit.
A. 81 B. 9 C. does not exist D. ±9
Mathematics
Choose the best estimate from the list.6
+ 9
is approximately 15, 15
, 15
, 16.
A. 15
B. 15
C. 16
D. 15
Mathematics
Find an equation for the ellipse described. Graph the equation.Foci at (-2, 4) and (-2, -2); length of major axis is 10
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics