Find a cartesian equation of the following curve, assuming the center is at the origin. Use a graphing utility to check your work.An ellipse with foci (±8, 0) and eccentricity 
A. 
+ y2 = 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: B
Mathematics
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Solve the equation.-0.03x + 0.13(x + 900) = 147
A. {30} B. {3000} C. {30,000} D. {300}
Mathematics
Complete the identity.sin ? [sin(5?) + sin 7?)] = ?
A. 
cos ? [cos(5?) + cos(7?)]
B. cos ? [cos(5?) + cos(7?)]
C. 
cos ? [cos(5?) - cos(7?)]
D. cos ? [cos(5?) - cos(7?)]
Mathematics
Write the decimal as a percent.0.41
A. 0.041% B. 410% C. 4.1% D. 41%
Mathematics
Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal.sin x - sin x cosx = sin3 x
A. ?
B. 
C. 
D. 0
Mathematics