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math

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A brick wall is constructed with 20 rows of bricks. If the height of a brick is 3 7/8 inches and a mortar joint is approximately 5/8 inch, how heigh would the wall be? _______ inches

Does Anyone know how to do this one?

  • math - ,

    There are 20 rows of brick and 19 rows of mortar.
    The total height would be:
    20*(3 7/8)inches + 19*(5/8)inches
    =??

  • math - ,

    70 1/2 ????

  • math - ,

    20*(3 7/8) + 19*(5/8)
    =20*(31/8) + 19*(5/8)
    =(620/8) + (95/8)
    =715/8
    =89 3/8

  • math - ,

    a wall in front of a house is shown below. if 3/5 of the wall is made from brick, how do you determine the height of the brick portion of the wall. 7 3/4 height and width 15 1/5?

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