Ask your own question, for FREE!
Mathematics 13 Online
OpenStudy (miss.rose):

I need help with Ratios can anyone help me? I will medal and fan!

OpenStudy (anonymous):

Ill try

OpenStudy (md152727):

I can

OpenStudy (md152727):

I am in 9th grade :)

OpenStudy (miss.rose):

Okay. Great! First question: Which is the best equation to use to solve this problem? The perimeter of a rectangle is 68 ft. The ratio of the length to the width is 9 : 8. What are the dimensions of the rectangle? A. \[\frac{ 9x }{ 8x }=68\] B. 9x+9x+8x+8x=68 C. 2x+2x=68 D. 9x+8x=68

OpenStudy (md152727):

2x + 2x = 68 9x/8x = 68 9x + 8x = 68 9x + 9x + 8x + 8x = 68

OpenStudy (miss.rose):

@Ghostgate @ShiBuringa Can you help?

OpenStudy (shiburinga):

Which answer do you think it is? And Why?

OpenStudy (miss.rose):

I'm not really sure... I mean any of the answers could work.

OpenStudy (shiburinga):

The perimeter (around the rectangle, I believe) Is 68 feet in total. Length is 9 feet long, and the width is 8 feet. Of course.. we need to find our what x equals.

OpenStudy (shiburinga):

Right?

OpenStudy (shiburinga):

Anyways.. We can take away the answer C and D away. And A. xD So that leaves one answer.. xP

OpenStudy (ghostgate):

Okay, you have 68 feet in total for the perimeter, however you have 2 length and 2 width measurements that are unknown, which can be represented by 'x' since they are unknown, however the length to width ratio is 9:8, so... with that in mind, what do you think the answer is?

OpenStudy (miss.rose):

2x+2x=68?

OpenStudy (ghostgate):

No, 2x doesn't add up, your length measurement is represented by the '9' on the ratio and your width is measured by the '8' on the ratio, not 2. What I meant by 2 is that you have 2 width and 2 length measurements, in other words like 'x + x' = length total and 'y + y' = width total as an example.

OpenStudy (miss.rose):

So... the answer would be 9x+9x+8x+8x=68?

OpenStudy (miss.rose):

Um... no. Why?

OpenStudy (ghostgate):

Okay, take for example a square, or rectangle I guess, where not all 4 sides are equal, but one side and the one across from it equal, if you get what I mean, like this: |dw:1450134084038:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!