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Radiometric dating, or radioactive dating as it is sometimes called, is a method used to date rocks and other objects based on the known decay rate of radioactive isotopes. Different methods of radiometric dating can be used to estimate the age of a variety of natural and even man-made materials.

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A system of linear equations contains two or more equations  and. The solution of such a system is the ordered pair that is a solution to both equations. To solve a system of linear equations graphically we graph both equations in the same coordinate system. The solution to the system will be in the point where the two lines intersect.

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Elsewhere in Asia and Africa, the British and French recruited subjects in their
colonies for the struggle. Fighting troops as well as laborers came from India,
South Africa, Senegal, Egypt, Algeria, and Indochina. Many fought and died on the
battlefield. Others worked to keep the front lines supplied. To be sure, some colonial
subjects wanted nothing to do with their European rulers’ conflicts. Others volunteered
in the hope that service would lead to their independence.

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Any security system then, whether it may be a simple

lock and key measure or a complex cryptosystem to encrypt a

message, has as one of its flaws, the human factor because we

imperfect humans are the ones who created that system.

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A linear equation is special because when you find pairs of values that make the linear equation true and plot those pairs on a coordinate grid, all of the points for anyone equation lie on the same line. Linear equations graph as straight lines.