roxyn4i9nabo roxyn4i9nabo

20-09-2016
Mathematics

contestada

eight times a number is the same as 90 decreased the number. find the number.

Respuesta :

nikkininja1416 nikkininja1416

22-09-2016

8n=90-n
first get the n to one side...
8n^2=90
then divide
n^2=11.25
(i feel like theres one more step but im unsure)

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