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Find value of x

Mathematics

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Answer

14314\sqrt{3}

Step-by-step solution

4 steps
  1. Tambua aina ya pembetatu.

    Kwa kuwa hakuna pembe iliyoonyeshwa, lakini kuna pande tatu zilizopewa, na kwa kawaida maswali kama haya huashiria pembetatu ya pembe mraba ikiwa hakuna taarifa nyingine, tutachukulia kuwa ni pembetatu ya pembe mraba. Upande mrefu zaidi, 28, utakuwa hypotenuse.

  2. Tumia Theorem ya Pythagoras.

    Theorem ya Pythagoras inasema kwamba katika pembetatu ya pembe mraba, jumla ya miraba ya pande mbili fupi (miguu) ni sawa na mraba wa upande mrefu (hypotenuse).

    a2+b2=c2a^2 + b^2 = c^2

    Katika kesi hii, xx na 14 ni miguu, na 28 ni hypotenuse.

    x2+142=282x^2 + 14^2 = 28^2
  3. Tafuta thamani ya x2x^2.

    Kwanza, hesabu miraba ya nambari zinazojulikana.

    x2+196=784x^2 + 196 = 784

    Toa 196 kutoka pande zote mbili za mlinganyo.

    x2=784−196x^2 = 784 - 196 x2=588x^2 = 588
  4. Tafuta thamani ya xx.

    Chukua mzizi wa mraba wa 588.

    x=588x = \sqrt{588}

    Ili kurahisisha mzizi wa mraba, tafuta vigawo vya mraba kamili vya 588.

    x=4×147x = \sqrt{4 \times 147} x=4×49×3x = \sqrt{4 \times 49 \times 3} x=4×49×3x = \sqrt{4} \times \sqrt{49} \times \sqrt{3} x=2×7×3x = 2 \times 7 \times \sqrt{3} x=143x = 14\sqrt{3}

    Thamani ya xx ni:

    14314\sqrt{3}
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