Are the ratios 15:3 and 5:1 equivalent?
yes
no
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7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

Fast! find the length of cu. the triangles are similar. show your work.