The circle or ellipse shown in the calculator-generated graph was created using function mode with a square viewing window. What are the two functions y1 and y2 that were used to obtain the graph whose equation is given?
+ 
= 1
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Answer: B
Mathematics
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Find the slope of the line that goes through the pair of points.(4, -9) and (7, 2)
A. -7
B. 3
C. Undefined
D. 3
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Determine whether the infinite geometric series converges or diverges. If it converges, find its sum.
A. Converges; -6.39 B. Converges; -9.09 C. Converges; 9.09 D. Diverges
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Use the Pythagorean identity.Find sin ?, given that cos ? = 
and 0 ? ? < ?
A. 
B. 
C. - 
D. - 
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Solve the problem.A set of chairs costs $316. The sales tax is $15.80. What is the sales tax rate and what is the total price paid?
A. 7%, $331.80 B. 6%, $331.80 C. 0.5%, $331.80 D. 5%, $331.80
Mathematics