anonymous
  • anonymous
* I will fan & medal! xoxo. * :D The staff at the community center make a rectangular ice skating rink every year. They use 140 meters of boarding to enclose it. So the area of the rink depends upon the width undefined chooses. This rule describes how the area depends on the width, w: w(70 ??? w) or 70w ??? w^2 Width | Area 10 | 600 15 | 825 20 | 1000 25 | ? The table shows some of the values for this function. Help complete the able. If the width is 25 metes, what will the area be? <3
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
*table
SolomonZelman
  • SolomonZelman
I am sturggling to understand the rule they are going by...
anonymous
  • anonymous
@SolomonZelman
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SolomonZelman
  • SolomonZelman
Well, if you know that the width is 25 meters, then use: A=l•w You know that P=2(l+w) So you can use that to find the length. 140=2(l+25) solve for length
SolomonZelman
  • SolomonZelman
So find l, and then the Area
anonymous
  • anonymous
l = 45
SolomonZelman
  • SolomonZelman
Yes, correct
SolomonZelman
  • SolomonZelman
And then: A=w•l A=25•45 A=?
anonymous
  • anonymous
1,125?
SolomonZelman
  • SolomonZelman
I don't have a calc. so lets do that.... 25•45= 25•(25+20)= 25•25+25•20= 625+500= 1125. Yes:)
anonymous
  • anonymous
Yay! thank you :) <3
SolomonZelman
  • SolomonZelman
I like practicing every technique that I can encounter while doing a question, this is why I have done what I did just now....
SolomonZelman
  • SolomonZelman
By the way, in Russia for example as long as other Ueropean countries, when you use a comma you indicate a decimal so I try to use space (source: from Engineering).
SolomonZelman
  • SolomonZelman
e.g \(1{\tiny~~}125\)
SolomonZelman
  • SolomonZelman
in any case, i know you meant a thousand, tho'
anonymous
  • anonymous
Oh I see! Thank you for informing me! ^_^
SolomonZelman
  • SolomonZelman
Don't worry about it tho now:) You are welcome, and good luck!
triciaal
  • triciaal
agree with the above just wanted to add the function A = (70 - w)w
SolomonZelman
  • SolomonZelman
Yes, that is true:)
SolomonZelman
  • SolomonZelman
By the way good choice of meters, as they are the "SI Units"... don't want to overwhelm on the same question tho'..... cu

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