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Mathematics 85 Online
OpenStudy (anonymous):

4a/9 = 100/45

OpenStudy (anonymous):

a = 5

OpenStudy (anonymous):

How did you get that answer ?

OpenStudy (anonymous):

45*a=100*9

OpenStudy (anonymous):

by cross multiplying

OpenStudy (anonymous):

45*4a=180a

OpenStudy (anonymous):

Then don't you divide?

OpenStudy (anonymous):

=900

OpenStudy (anonymous):

900 divide by 180

OpenStudy (anonymous):

a=5 use same procedure for smilar questions

OpenStudy (anonymous):

9*100=45*4a 900=180a a=5

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