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Math Help - Does anyone have a messenger and can help me? please :)

  1. #1
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    Does anyone have a messenger and can help me? please :)

    I really need help with solving perimeter problems. I have every messenger, and if you have 1 and can help me with problems like:

    -The perimeter of a rectangle is 48 centimeters. If the length of the rectangle is 16 centimeters, find its width.
    Or
    -The length of a side of an equilateral triangle is represented by X + 5. Represent the perimeter of the triangle.

    If you can help me with problems similar to those please leave feedback, and the messenger you have with your screen name. I need help quickly because schools tomorrow Thank you. Im sorry if i posted this again, but im really despirate for help and im doing horrible in 9th grade math
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  2. #2
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    equilateral triangle perimeter

    an equilateral triangle has 3 equal sides. The name comes from latin equi meaning equal and lateral meaning side.

    If one side = x + 5 , then all sides = x + 5.

    Therefore the perimeter is simply the addition of (x+5) + (x+5) + (x+5), or

    3x + 15
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  3. #3
    Site Founder MathGuru's Avatar
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    perimeter of rectangle

    Quote Originally Posted by chrism
    -The perimeter of a rectangle is 48 centimeters. If the length of the rectangle is 16 centimeters, find its width.
    The perimeter of a rectangle = (2 * length) + (2* width)

    In this case we can write the equation as:

    48 = (2*16) + (2*width)

    can you solve it from there?
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  4. #4
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    Thank you

    Thank you for your help, i sent you a pm, asking a quick question
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