Find x.
6.5 cm
x
2.5 cm
Y=
cm

9514 1404 393

  x = 6.0 cm

Step-by-step explanation:

The ratio of the given dimensions is 2.5/6.5 = 5/13. This should give you a clue that the dimensions here are all half those of the (5, 12, 13) Pythagorean triple. That is, ...

  x = 12/2 = 6 . . . cm

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In case you haven't memorized a few of the Pythagorean triples commonly used in algebra problems*, you can figure x using the Pythagorean theorem:

  6.5² = 2.5² +x²

  42.25 -6.25 = x²

  x = √36 = 6

  x = 6.0 cm

* most commonly seen are (3, 4, 5), (5, 12, 13), (7, 40, 41) and their multiples.

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.