The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x2 + 4y2 = 4

A. 4 cos2 ? + sin2 ? = 4r
B. r2(cos2 ? + 4 sin2 ?) = 4
C. r2(4 cos2 ? + sin2 ?) = 4
D. cos2 ? + 4 sin2 ? = 4r


Answer: B

Mathematics

You might also like to view...

You are assigned to keep track of the liquids that Mr. Bailey consumes during your shift. If he drank  of a 6 oz cup of coffee,  of an 8-ounce glass of water, and  of a 6-ounce juice carton, how many ounces of fluid did he consume?

A. 13 oz
B. 14 oz
C. 9 oz
D.  oz

Mathematics

Simplify the complex rational expression.

A.
B.
C.
D.

Mathematics

Determine whether the graph is the graph of a function.  

A. function B. not a function

Mathematics

Solve the problem.The table lists numbers of bachelor's degrees awarded by a midwestern college in selected years. Determine  so that f models these data. 

A. f(x) = 1.3(x - 2002)2 + 434 B. f(x) = 1.5(x - 1992)2 + 564 C. f(x) = 1.3(x - 1992)2 + 564 D. f(x) = 1.5(x - 2002)2 + 434

Mathematics