Convert the rectangular equation to a polar equation that expresses r in terms of ?.y2 = 2x
A. r = 4 cot x cscx
B. r = 2 cot x cscx
C. r2(cos ? + sin ?) = 2
D. r = 2 cot2 x
Answer: B
Mathematics
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A. 12
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C. 
D. 
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- 
A. 
B. - 
C. - 
D. - 
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Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 10 feet by 20 feet and the area of the rug is 96 square feet, how wide will the border be?
A. 4.5 ft B. 4 ft C. 2 ft D. 3 ft
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Find the volume of the solid below, when ?a? = 10, ?b? = 20, ??c? = 2.
?
?
A. 500 mm 3 B. 400 mm 3 C. 471 mm 3 D. 8 mm 3 E. 444 mm 3
Mathematics