mair427 mair427

07-01-2016
Mathematics

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do the ratios 2.5/4 and 7/11.2 form a proportion

Respuesta :

07-01-2016

Only if their cross products are equal.
If 2.5 x 11.2 = 4 x 7 then they form a proportion.

And the answer is yes
because both cross products are 28.

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