What is 2+2 Anybody know what is Annie's username i forgotten her username it was something start with K, Any if you're reading this drop a comment!

Dawn is selling her mp3 player for 3 4 of the original price. the original price for the mp3 player was $40. how much is she selling her mp3 player for?

Lines a and b are perpendicular. the equation of line a is y=13x+3. what is the equation of line b?

An airplane is taking off headed due north with an air speed of 173 miles per hour at an angle of 18° relative to the horizontal. the wind is blowing with a velocity of 42 miles per hour at an angle of s47°e. find a vector that represents the resultant velocity of the plane relative to the point of takeoff. let i point east, j point north, and k point up.