Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with y-intercepts ±8; foci at 
and 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Multiply.(5
+ 6)2
A. 239 + 60
B. 311 - 60
C. 281 + 60
D. 311 + 60
Mathematics
Graph the quadratic equations.y = x2 + 10x + 25
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A weight attached to a spring is pulled down 6 inches below the equilibrium position. Assuming that the period of the system is 
second, write an equation of the weight's simple harmonic motion.
A. y = 6cos 6?t
B. y = -6cos 3?t
C. y = -6cos 6?t
D. y = 6cos 
t
Mathematics
Find the ordinary interest or exact interest as specified. Round to the nearest cent.David Owens borrows $7200 on October 26 and agrees to repay the loan on December 31 at 11% interest. How much ordinary interest will be due?
A. $145.20 B. $792.00 C. $7345.20 D. $147.40
Mathematics