It is thought to develop from a mix of physical, emotional, and social triggers.

The school's pupils come from a mix of social and private housing.

Financing for the treatment centers comes from a mix of federal, state and local money.

Students come from an equal mix of rural and urban homes.

The three men in charge come from a mix of backgrounds.

Funding would be from a mix of private and state capital.

That rent money, he said, comes from a mix of city, state and Federal funds.

He made his first one, from a mix, when he was 12.

Funding for the project would come from a mix of land sale and fund raising.

It is also possible to create a matrix made from a mix of the above mentioned materials.