The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x2 + y2 - 4x = 0
A. r = 4 sin ?
B. r cos2 ? = 4 sin ?
C. r = 4 cos ?
D. r sin2 ? = 4 cos ?
Answer: C
Mathematics
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Solve the differential equation.x
= 
- 6y, x > 0
A. y = x6(sin x + C), x > 0 B. y = x6(cos x + C), x > 0 C. y = x-6(sin x + C), x > 0 D. y = x-6(cos x + C), x > 0
Mathematics
Describe the given distribution with a circle graph.The following figures give the economic distribution for 14,000 people who live in a certain county.
?
?
What will be an ideal response?
Mathematics
Find the coordinates of the centroid of the given figure.The solid generated by revolving the region bounded by 
, and 
, about the y-axis
A. 
B. 
C. 
D. 
Mathematics
Find the product.
A. - 
B. - 
C. 
D. 
Mathematics