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Math Help - PLZ Help with 3 Test Questions

  1. #1
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    PLZ Help with 3 Test Questions

    PLEASE HELP! would be much appreciated : )

    1. For any real numbers x, let $ x be defined as the greatest integer less than or equal to x.
    What is $ -1.5 + $ 4.5 ?

    2. For any integers n, let n be defined as the sum of the distinct prime factors of n. For instance, 36=5, because 2 and 3 are the only prime factors of 36 and
    2+3=5.
    What is the smallest value of w for which w=12 ?

    3. For all real numbers a and b, let the expression a b be defined by the equation a b= 10a + b.
    If 2.5 y = 50, what is the value of x?

    Thank you very much
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  2. #2
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    Hi, and welcome to the forum. I like your notations

    Forum rules ask you to make some effort (see rule #11). This may be a partial solution or at least a description of what exactly your difficulty is. For example, you should be able to find the greatest integer less than or equal to 4.5 from the first problem.
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  3. #3
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    Quote Originally Posted by Kareemf74 View Post
    PLEASE HELP! would be much appreciated : )

    1. For any real numbers x, let $ x be defined as the greatest integer less than or equal to x.
    What is $ -1.5 + $ 4.5 ?

    2. For any integers n, let n be defined as the sum of the distinct prime factors of n. For instance, 36=5, because 2 and 3 are the only prime factors of 36 and
    2+3=5.
    What is the smallest value of w for which w=12 ?

    3. For all real numbers a and b, let the expression a b be defined by the equation a b= 10a + b.
    If 2.5 y = 50, what is the value of x?
    Test questions? see rule #6 ...

    http://www.mathhelpforum.com/math-he...ng-151418.html
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