Find an equation for the ellipse described.Focus at (-2, 0); vertices at (-8, 0) and (8, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
Mathematics
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Use identities to find the exact value of the expression.cos 20° sec 20°
A. 20 B. 1 C. -1 D. 0
Mathematics
Find the approximate annual percentage rate using the approximate annual percentage rate formula. Round to the nearest tenth of a percent.Amount financed: $127,534Finance charge: $211,690Number of monthly payments: 360
A. 11.0% B. 11.1% C. 9.0% D. 4.0%
Mathematics
Perform the indicated operation.
? 
A. 
B. 
C. 
D. 
Mathematics
Use the Binomial Theorem to expand the binomial and express the result in simplified form.(x5 + 4y)4
A. x9 + 16x8y +24x7y2 + 16x5y3 + 4y4 B. x20 + 16x15y + 96x10y2 + 256x5y3 + 256y4 C. x20 + 12x15y + 96x10y2 + 192x5y3 + 256y4 D. x9 + 12x8y + 96x7y2 + 192x5y3 + 256y4
Mathematics