algebra

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joe is going to build a retangular lap pool. the perimeter of the pool will be 240 feet. the length of the pool will be 20 feet more than 3 times the width. find the length and width

  • algebra -

    L=3W+20

    P= 2L + 2W= 2(3W+20)+2W
    240= 8W+40

    check that. Solve for W, then solve for L

  • algebra -

    tom is going to build a fence around his garden which is rectangle measuring 8 cm by 20 m. he will first put in posts which will be 4 m apart. if the post cost $4 each what will be the total cost for all the posts

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