In general, in polar coordinates (r, ω) = (-r, ω+π), because when you add π radians to an angle you are turning 180 degrees and then need to change the sign of the radius to preserve the original point.
Then (-5, π/4) = (5 , π/4 + π) = (5, 5π/4)
Answer: (5, 5π/4)
H (she spent 15.00)
If you subtract 65-15 she has $50 left.
So they have the same amount
The answer is false.
In fact, the diameter would be the longest chord in a circle, since the points of a diameter need to pass through the center of the circle. Whereas a chord, by definition is any line whose ends are in the circle.
