This mountainside is covered in thousands of mysterious ancient holes. Scientists now believe they know why - Early aerial ...
New research suggests that the holes were the site of an ancient marketplace, and Inca rulers may have used them as a ...
Plotted points on a graph are referred to as coordinates. Coordinates are pair of numbers written in the form \(({x},~{y})\) where \({x}\) is the amount moved horizontally, and \({y}\) the amount ...
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