Answer:
Eccentricity is a measure of how closely a conic section resembles a circle. It is a characteristic parameter of every conic section and conic sections are said to be similar if and only if their eccentricities are equal.
Explanation:
Answer:
A cross-sectional study
Explanation:
The best fit would be cross-sectional study, for one because it is observational, meaning there is no manipulation of variables like you would find in an experiment. Secondly, it is comparing populations within different groups, in this case age groups. Although, this can also be done through a longitudinal study, but as the name suggests, it is longitudinal so it is done over longer periods of time.
I think the mixed-market system describe american economic system the most.
the mixed market have both the free-market and socialist market characteristic
It's true that in early U.S history, the american economic system is closer to the free-market,
But as the united states developed, it's improtant for our government to be involved in some part of economic affairs in order to obtain some social aims
