Find the standard-form equation for an ellipse which satisfies the given conditions.An ellipse with y-intercepts ±6; foci at 
and 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
Mathematics
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Find the reciprocal.
A. 
B. - 
C. 
D. 
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. 3x4y2
B. 3x2y
C. 9x2y
D. 63xy
Mathematics
Determine whether the improper integral is convergent or divergent.
A. Convergent B. Divergent
Mathematics
Find all cube roots of the complex number. Leave answers in trigonometric form.2 + 2i
A. 
cis 20°, 
cis 140°, 
cis 260°
B. 
cis 20°, 
cis 140°, 
cis 260°
C. 
cis 30°, 
cis 150°, 
cis 270°
D. 
cis 20°, 
cis 140°, 
cis 260°
Mathematics