Miss.Rose
  • Miss.Rose
I need help with Ratios can anyone help me? I will medal and fan!
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Ill try
MD152727
  • MD152727
I can
MD152727
  • MD152727
I am in 9th grade :)

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Miss.Rose
  • 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
MD152727
  • MD152727
2x + 2x = 68 9x/8x = 68 9x + 8x = 68 9x + 9x + 8x + 8x = 68
Miss.Rose
  • Miss.Rose
@Ghostgate @ShiBuringa Can you help?
ShiBuringa
  • ShiBuringa
Which answer do you think it is? And Why?
Miss.Rose
  • Miss.Rose
I'm not really sure... I mean any of the answers could work.
ShiBuringa
  • 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.
ShiBuringa
  • ShiBuringa
Right?
ShiBuringa
  • ShiBuringa
Anyways.. We can take away the answer C and D away. And A. xD So that leaves one answer.. xP
Ghostgate
  • 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?
Miss.Rose
  • Miss.Rose
2x+2x=68?
Ghostgate
  • 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.
Miss.Rose
  • Miss.Rose
So... the answer would be 9x+9x+8x+8x=68?
Miss.Rose
  • Miss.Rose
Um... no. Why?
Ghostgate
  • 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|
Miss.Rose
  • Miss.Rose
Yes, I get it. Can you help me with one more, then look over 3 questions I already answered?
Ghostgate
  • Ghostgate
Alright, so you understand how you got your answer from before then? Also, alright let's go over the others then.
Miss.Rose
  • Miss.Rose
This is the one I need help with: Ratio's Question 2. Then the 3 I need you to look over are Ratio's Question 3,4,5
Ghostgate
  • Ghostgate
For question 2, go over the scenario again, you know that the ratio is 9 to 8, and the total is 136 sq. ft. this time. So, you can bring up the old equation as a reference: 9x + 9x + 8x + 8x = 136 - With that in mind, you can add like terms, so... what would that give you? For question 3, you are correct, a simple way to do it I guess would be to divide 270 by 5 to get 54, then multiply 54 by 4 to get 216. A pretty quick way to check your answer. For question 4, simply to check, divide 2,700 by 4,000 to get your answer. But yes you are correct. For question 5, I believe you're correct, considering you have 4x and 5y. I hope that helps in someway, have a great day! ;) {---Ghostgate---}
Miss.Rose
  • Miss.Rose
@rebeccaxhawaii
Miss.Rose
  • Miss.Rose
@Ghostgate I still do not get it for number 2.
Ghostgate
  • Ghostgate
As I narrowed it down, you now have: 9x + 9x + 8x + 8x = 136 - You have to add like terms, do you know what the term 'like terms' means?
Miss.Rose
  • Miss.Rose
Terms that are similar?
Ghostgate
  • Ghostgate
Yes, for example: 3x + 2x + 5 = 120 - For instance, '3x' and '2x' are similar because the 'x' variable exists for both, '5' isn't considered similar since we don't know what 'x' is, same could be said for this: 3x + 2x + 5y + 6y + 5 = 120 - As far as this goes, '5y' and '6y' are like terms because they share the 'y' variable.
rebeccaxhawaii
  • rebeccaxhawaii
okay so for the first one of the 4 attachments
Ghostgate
  • Ghostgate
Now, what does: 9x + 9x + 8x + 8x = ? - What does it come out to be?
rebeccaxhawaii
  • rebeccaxhawaii
so 9:8 when multiplied by 4 is 36 and 32 so |dw:1450135102599:dw|
rebeccaxhawaii
  • rebeccaxhawaii
the perimeter would come out to 136 therefore your answer being c
rebeccaxhawaii
  • rebeccaxhawaii
\[270\div216=1.25 and 5\div4=1.25\]
rebeccaxhawaii
  • rebeccaxhawaii
so your answer is correct for the second one
Miss.Rose
  • Miss.Rose
Okay, great! Thank you both! I do not know what I would do without your help. Thanks, again! Have a great rest of the day!
Ghostgate
  • Ghostgate
@rebeccaxhawaii You like bluntly gave her the answer then started explaining... The way you do it: 9x + 9x + 8x + 8x = 34x 34x = 136 - Divide 34 by both sides: 1x = 4 - Or - x = 4 9*4 = 36 and 8*4 = 32, so...: Your length is 36 and your width is 32.
rebeccaxhawaii
  • rebeccaxhawaii
no i explained which the answer at hand lol k bye @Ghostgate
Ghostgate
  • Ghostgate
You mentioned that the length was 36 and the width was 32 within your first reply, then afterwards explained your method on getting there.

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