(this is math) find the center of the circle whose diameter has an endpoint at (-3,-4) and the origin. the radius of the circle = 5/2

It would be wise to put this in the math section otherwise you wont be able to get the help you need so others cant help you when you need someone to. I would suggest putting this in the math section so your question is answered quickly with no problems at all.

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."