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Mathematics 18 Online
OpenStudy (anonymous):

9/a=81/10

OpenStudy (saifoo.khan):

a = 10/9

OpenStudy (anonymous):

can u show work please

OpenStudy (anonymous):

\[\frac{9}{a} = \frac{81}{10}\] Cross multiply \[81a = 900\]Divide by 81 \[a = \frac{900}{81}\] Simplify \[a = \frac{100}{9}\]

OpenStudy (anonymous):

woops.. should be 90 insead of 900.. Answer should be \[a = \frac{10}{9}\]

OpenStudy (anonymous):

I cant multiply tonight >.<

OpenStudy (anonymous):

haha thanks for the anser

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