The length of a rectangle is twice the width. The area is 338 yd. Find the length and the width.

Question

The length of a rectangle is twice the width. The area is 338 yd. Find the length and the width.

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Maris 2 weeks 2021-08-29T03:42:19+00:00 1 Answers 0 views 0

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    2021-08-29T03:43:57+00:00

    The width is 13 and the length is 26.

    Explanation:

    Area of rectangle = length x width

    Let x be the width of the rectangle and 2x be the length of the rectangle.

    2x * x= 338

    2x² = 338

    x² = 338/2

    x² = 169

    x² – 169 = 0

    (x)² – (13)² = 0

    (x-13)(x+13) = 0

    x – 13 = 0 or x + 13 = 0
    x = 13 or -13

    -13 is rejected, as length or width cannot be negative.

    Ans:The width is 13 and the length is 2 x 13 = 26.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )