It was once a body of water there, having the shell in the rock means that a sea creature lived there so there must have been water there at one time in history.
Answer:
Definition of mayor-council. : of, relating to, or constituting a method of municipal government in which policy-making and administrative powers are vested in a usually elective mayor and council — compare council-manager plan, strong mayor, weak mayor.
74. It is believed that early humans crossed that _________ to get to North America.
Long time ago, our earth is filled with ice that connects all places around the world. Thus early humans crossed through frozen waters to migrate from one place to another. Since this is the scenario long years ago, I believe that early humans also crossed on the ice to be able to get to north America and live there for a period of time.
That is what History is telling us about our ancestors and our mother earth.
Special triangles tell us that: 45-45-90 angles mean side ratios of 1-1-sqrt2, 30-60-90 angles have side ratios of 1-sqrt3-2.
Beginning from the upper-left corner and working clockwise:
The first side is a 45-45-90 triangle with legs of 24 in, so the hypotenuse is 24sqrt2.
The upper-right triangle is a 30-60-90, and the side opposite 30 degrees has length 24, so the hypotenuse is twice that, which is 48.
The right side is just x = 24.
The remaining three sides are identical to the first three (one from a 45-45-90 hypotenuse, another a 30-60-90 hypotenuse, and the last equal to x).
So the total perimeter is 24sqrt2 + 48 + 24 + 24sqrt2 + 48 + 24 = 144 + 48sqrt2 inches. This is choice D.
