known quantity in a sentence

Examples

1. Mongolia is a barely known quantity in the West.
2. For a team that seemed such a known quantity, the Chiefs are full of surprises.
3. _The chance to work with a car that is now becoming more of a known quantity.
4. He heated them with a known quantity of energy and measured how much heat was produced.
5. When you think about it, James Brown is really the only known quantity as a passer.
6. PlayStation 2, a $ 299 black box with a heavily machined look, is a known quantity.
7. A known quantity to measure other quantities by.
8. He says he is " a known quantity " to the North End dealers and gangbangers.
9. But Jeb is still not a known quantity.
10. But where are the sources establishing that string of words as a " known quantity "?