Are the ratios 5:18 and 1:2 equivalent?

 No; they are not equivalent.

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Step-by-step explanation:

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Note: The ratio:  " 1:2 " ;  can be written as:  " " ;

         The ratio:  " 5:18 " ; can be written as: " " .

  → " " ;

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 → " " ;

                   → " " ;

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 → " " ;

                   → " " ;

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 → " " ;

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                   → " " ;

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 → " " ;

                   → " " .

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Hope this helps!

Best wishes!

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the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

you'll just earn points here

step-by-step explanation: