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The measure of the angles supplement is 30 more than four times that of its complement. find the measure of the angle described

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.

Balanced rock sits on a thin spike of rock in a canyon what forces keep the rock balanced on its tiny pedestal