In the figure, m 2 1= (2x)° and m 2 2 = (x+84)º. part 1. write an equation to find x
part 2. find degree measure of m<1 and m<2

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Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

Pls math have no ideamultiply and simppify. 2x^2y^3z^2 • 4xy^4x^2

Find the value of x to the nearest tenth.