A certain circle can be represented by the following equation. x2 + 2x + y2 = 0
What is the center of this circle ?
What is the radius of this circle ?
units

How far could you drive on 50 gallons of gas

Rick is driving to his uncles house in greenville, which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

Angle 1 and 2 are a linear pair. angle 1 equals x-39 and angle 2 equals x+61 . find the measure of each angle