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Math Help - Some stuff :P

  1. #1
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    Some stuff :P

    Like this (Everything in bolded is the questions, and just give the answer. If you have time, steps too, but it is not required) :

    (Write the following in algebraic expression)

    Find the sum of the squares of two consecutive integers (Let the smaller integer be n.)

    Brrr... brain freeze!!

    The 2 adjacent sides of a rectangle are m cm and n cm. What is the total length of the adjacent sides? It is... (# cm)
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  2. #2
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    Quote Originally Posted by Rocher
    Like this (Everything in bolded is the questions, and just give the answer. If you have time, steps too, but it is not required) :

    (Write the following in algebraic expression)

    Find the sum of the squares of two consecutive integers (Let the smaller integer be n.)
    n^2+(n+1)^2
    Quote Originally Posted by Rocher
    The 2 adjacent sides of a rectangle are m cm and n cm. What is the total length of the adjacent sides? It is... (# cm)
    n+m
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  3. #3
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    2 times a number plus 12 is equal to the sum of the number and 36. What is the number? I put 12... iz that right?

    In 16 years, John will be 3 times as old as he is now. How old is he?

    The area of this trapezium is 270 cm2 (Squared). Find its height. They give me two measurements already: 8 cm, and 28cm.
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  4. #4
    Member Ranger SVO's Avatar
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    Two times a number ( 2X ) plus 12 is equal to the sum of that number and 36.

    I think the equation should look like 2X + 12 = X + 36 then X = 24

    Johns current age is unknown ( X ). In 16 years he will be 3 times X

    The equation should look like X + 16 = 3X Can you get it from here?

    Don't remember trapaziods.
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  5. #5
    Member Ranger SVO's Avatar
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    The area of a trapaziod is given by the following equation

    Area = Height * ((a + b)/2) Because you are given the area and you ask for the height, I would assume that the two measurements you are given is a and b

    So 270 = h * (28 + 8)/2
    270 = h * 36/2
    270 = h* 18 divide both sides by 18 and you get
    15 = h

    (and why is there no equation editor here )
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