rmarabel1 rmarabel1

10-02-2017
Mathematics

contestada

7/a = 28/40 how to do this

Respuesta :

caseyl30 caseyl30

10-02-2017

So first we cross multiply

7/a times 7/40 which equals = 28a and 280

Divided both sides by 28.
28a divided by 28 = A. Then 280 divided = 10

So a = 10

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