Compare the use of groundwater in pre-industrial times to industrial times.

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4

If the basis of an isosceles trapezoid have lengths of 11 and 26, what is the length of the median?

The plants growing on scotlands highland moors are a)mixed forestb)grasses and low shrubsc)evergreen treesd)palm trees and ferns