Write the equation of the circle in standard form. Find the center and radius. Then sketch the graph.x2 + y2 + 4y - 0 = 0
A. (x + 2)2 + y2 = 4
(h, k) = (- 2, 0), r = 2
B. x2 + (y - 2)2 = 4
(h, k) = (0, 2), r = 2
C. x2 + (y + 2)2 = 4
(h, k) = (0, - 2), r = 2
D. (x - 2)2 + y2 = 4
(h, k) = (2, 0), r = 2
Answer: C
You might also like to view...
Draw the graph of the equation.x2 - 8x - 4y + 32 = 0
A. 
B. 
C. 
D. 
Solve the problem.Suppose that sales of a particular brand of appliance satisfy the relationship 
where y represents the number of sales in year x, with 
corresponding to 1992. What does the ordered pair 
mean in the context of the situation? 
A. In 2005, sales of the appliance were 5860. B. In 2005, sales of the appliance were 11,880. C. In 2005, sales of the appliance were 11,800. D. In 2005, sales of the appliance were 5940.
Find zw or 
as specified. Leave your answer in polar form.z = 10(cos 30° + i sin 30°)w = 5(cos 10° + i sin 10°)Find zw.
A. 15(cos 40° + i sin 40°) B. 15(cos 300° + i sin 300°) C. 50(cos 300° + i sin 300°) D. 50(cos 40° + i sin 40°)
Indicate what must be done to each side of the equation in order to isolate the variable.-x = 0.46
A. Multiply by -0.46
B. Divide by 0.46
C. Divide by -1
D. Multiply by 