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Mathematics 21 Online
OpenStudy (anonymous):

Help! I may Give Medal! I Need Help Plz!

OpenStudy (anonymous):

"Which Ratios Can Form A Proportion?" A = 9/45, 8/40 B = 8/12, 12/21 C = 8/12, 12/15 D= 9/22 14/28 Help!

OpenStudy (anonymous):

Plz Help

OpenStudy (cybershadow):

take the cross products of the both sides and see if they r equal , if its equal, thats our answer :)

OpenStudy (cybershadow):

got it?

OpenStudy (anonymous):

i knew that

OpenStudy (anonymous):

the problem is it could be 3 ways_

OpenStudy (anonymous):

In simplest form, common multiplier or cross products

OpenStudy (pratyush5):

Covert both in simplest form.

OpenStudy (pratyush5):

Convert*

OpenStudy (pratyush5):

Got the ans ?

OpenStudy (cybershadow):

u can simply take cross products

OpenStudy (cybershadow):

A is the answer

OpenStudy (cybershadow):

as when u take cross product of 9/45= 8/40 u get 9*40 = 45 * 8 360 = 360 Satisfies :)

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