Convert the equation to Cartesian coordinates.r = 
A. 9y - 5x = 1
B. 9x - 5y = 1
C. 
= 1
D. 
+ 
= 1
Answer: B
Mathematics
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Use the appropriate identity to find the indicated function value. Rationalize the denominator, if applicable. If the given value is a decimal, round your answer to three decimal places.csc ?, given that sin ? = 
A. -4
B. 
C. 4
D. - 
Mathematics
Find the indicated matrix.Let A = [-3 2] and B = [1 0]. Find 2A + 3B.
A. [-5 4] B. [0 2] C. [-3 4] D. [-6 4]
Mathematics
Find the average value of the given function
?
?
over the plane region R.
?
; R is the region bounded by the graph of y = 8x and y = 0 from x = 1 to x = 7.
?
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Solve the problem.Find an equation of the circle that passes through the points (4, 6), (-6, 2), and (1, -3).
A. 
2 + 
2 = 
B. 
2 + 
2 = 
C. 
2 + 
2 = 
D. 
2 + 
2 = 
Mathematics