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Math Help - Measure and Precision

  1. #1
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    Measure and Precision

    Geometry.

    Just started doing this earlier today at school. We've been on heat schedule the whole year thus far (only gotten 5 days in this year up until now, anyhow), so time was a factor today in completing work, and trying to get everything done.

    We've started on the second unit of the first chapter of the book, it's relevant to line segments, measuring, and precision. Precision hasn't been on the SOL here the past few years, so he [the teacher] advised to us that it's not
    very important for the year but will be substantial to this chapter.
    -----------------

    I'm not trying to write an essay here or anything, but I'm trying to understand how in the world to complete all of this thoroughly, and most importantly, correctly. Here's what is bothering me that I'm confused with:

    Find the value of the variable and ST if S is between R and T.

    Alright, here's an example of a problem:

    RS = 7a, ST = 12a, RS = 28

    It has really gotten me flustered. I've looked through the chapter for some examples but haven't found any.

    I appreciate all the future help! Thanks!
    Last edited by Troy09; August 29th 2007 at 02:25 PM.
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  2. #2
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    Quote Originally Posted by Troy09 View Post
    Geometry.

    Just started doing this earlier today at school. We've been on heat schedule the whole year thus far (only gotten 5 days in this year up until now, anyhow), so time was a factor today in completing work, and trying to get everything done.

    We've started on the second unit of the first chapter of the book, it's relevant to line segments, measuring, and precision. Precision hasn't been on the SOL here the past few years, so he [the teacher] advised to us that it's not
    very important for the year but will be substantial to this chapter.
    -----------------

    I'm not trying to write an essay here or anything, but I'm trying to understand how in the world to complete all of this thoroughly, and most importantly, correctly. Here's what is bothering me that I'm confused with:

    Find the value of the variable and ST if S is between R and T.

    Alright, here's an example of a problem:

    RS = 7a, ST = 12a, RS = 28

    It has really gotten me flustered. I've looked through the chapter for some examples but haven't found any.

    I appreciate all the future help! Thanks!
    RS = 7a and RS = 28, so 7a = 28 and thus a = 4. Therefore ST = 12a = 48.
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  3. #3
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    Joined
    Aug 2007
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    Virginia
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    Thanks for the help, but I don't think that's the way it's supposed to be solved. The way the other questions are set up are just too inconsistent with the example I constructed.

    The way this is set up is just completely confusing. Could anyone give me a quick explanation about these types of questions?
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