Convert the equation to Cartesian form.r = 
A. 8x2 + 2x + 9y2 + 1 = 0
B. 9x2 + 10y2 - 2y - 1 = 0
C. 9x2 + 8y2 - 2y + 1 = 0
D. 9x2 + 8y2 - 2y - 1 = 0
Answer: D
Mathematics
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Calculate the area of the surface S. S is the portion of the cone 
+ 
= 
that lies between z = 1 and z = 4.
A. 
?
B. 
?
C. 
?
D. 
Mathematics
Find the area of the shaded region.y = x2 - 4x + 3
A. 3
B. 
C. 
D. 
Mathematics
Find the mean of the set of data. Round your answer to the nearest tenth.109, 38, 54, 54, 38, 109, 7, 7, 7, 109, 7, 7, 54
A. 45.5 B. 49.4 C. 46.2 D. 45.1
Mathematics
Provide an appropriate response.Use a calculator to find: log 121.5 Round to thousandths.
Fill in the blank(s) with the appropriate word(s).
Mathematics