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12 April, 17:04

The ideal length of a particular metal rod is 20.5 cm. The measured length

may vary from the ideal length by at most 0.045 cm. What is the range of

acceptable lengths for the rod?

O A. X5 20.455 or x 2 20.545

B. 20.455 > x < 20.545

O C. 20.455 2 x 2 20.545

D. 20.455 < x < 20.545

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Answers (1)
  1. 12 April, 17:12
    0
    D

    Step-by-step explanation:

    given that the ideal length x = 20.5cm

    range = ± 0.045

    hence the lower limit will be (20.5 - 0.045) and the upper range will be (20.5 + 0.045), i, e

    (20.5 - 0.045) < x < (20.5 + 0.045)

    or

    20.455 < x < 20.545 (answer D)
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