In the standard （x,y) coordinate plane, what is the slope of a line that is perpendicular

In the celestial equator system of coordinates what is equivalent to the colatitude of the Earth system of coordinates （).

The following ______ is a standard phrasA.You should anchor in anchorage B 3B.Anchor in an

The statistics ______ that living standards in the area have improved drastically in recen

What is implied in the last paragraph？A．Studying income reveals nothing about the standard

A common use with gold in the nineteenth century was as a standard for the value of money.

The______impact of inflation lies in the decline of people s living standard and social in