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Mathematics 8 Online
OpenStudy (jamaljunior):

https://gyazo.com/598605586378cc9f7e5ec11e0ad5e2f7

OpenStudy (vuriffy):

Okay, common ratio, so, it's a fraction.

OpenStudy (vuriffy):

What fraction multiplied by 54 equals 36?

OpenStudy (vuriffy):

What can you divide throughout all the given numbers? 54 - 36 - 24 - 12

OpenStudy (jamaljunior):

um

OpenStudy (jamaljunior):

4

OpenStudy (jamaljunior):

wait no

OpenStudy (jamaljunior):

6

OpenStudy (vuriffy):

54/4 = 13.5, so no.

OpenStudy (jamaljunior):

yeah. its 6

OpenStudy (vuriffy):

Try smaller in this case.

OpenStudy (jamaljunior):

3

OpenStudy (vuriffy):

A little bit smaller in this case.

OpenStudy (jamaljunior):

2

OpenStudy (jamaljunior):

lol why didnt i think of that first

OpenStudy (vuriffy):

This method I use helps you come up with the denominator that must be used to get to the next value. 2 will be your numerator.

OpenStudy (vuriffy):

|dw:1481085219185:dw|

OpenStudy (vuriffy):

Are you able to work that out for me, or do you wish for me to show you?

OpenStudy (jamaljunior):

idk how to work it out sry

OpenStudy (jamaljunior):

so pls show

OpenStudy (vuriffy):

|dw:1481085332990:dw|

OpenStudy (vuriffy):

54 * (2/3) = 36. 36 * (2/3) = 24. 24 * (2/3) = 16.

OpenStudy (vuriffy):

Oops, I am sorry, you "multiply by x" for the second step.

OpenStudy (jamaljunior):

So what do I do now vuriffy? is that the answer?

OpenStudy (vuriffy):

Yes. It has proven to equal the next value in the sequence every time. So, it is the common ratio.

OpenStudy (jamaljunior):

what should i put exactly? @Vuriffy

OpenStudy (vuriffy):

3:2, because it is descending. Also, you may do this: 54/36 = 1.5 36/24 = 1.5 24/16 = 1.5

OpenStudy (vuriffy):

My method is different, but you have to flip the ratio every time.

OpenStudy (jamaljunior):

alright thx

OpenStudy (jamaljunior):

could yu help with another?

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