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Evaluate 64-1/2 x 1290002/32-4 x 30 x 52

Mathematics

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Answer

648

Step-by-step solution

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: Evaluate

64−1/2×1290002/32−4×30×52\frac{64^{-1/2} \times 129000^{2/3}}{2^{-4} \times 3^0 \times 5^2}

Assumption: The number 129000 is likely a typo and should be 729000 to allow for a simplified evaluation, as 129 is not a perfect cube. We will proceed with this assumption.

  1. Evaluate each term in the numerator.

    • 64−1/264^{-1/2}:
    64−1/2=1641/2=164=1864^{-1/2} = \frac{1}{64^{1/2}} = \frac{1}{\sqrt{64}} = \frac{1}{8}
    • 7290002/3729000^{2/3}:
    7290002/3=(729×1000)2/3729000^{2/3} = (729 \times 1000)^{2/3} =(93×103)2/3= (9^3 \times 10^3)^{2/3} =((9×10)3)2/3= ((9 \times 10)^3)^{2/3} =(903)2/3= (90^3)^{2/3} =902=8100= 90^2 = 8100

    The numerator is 18×8100=81008=20252\frac{1}{8} \times 8100 = \frac{8100}{8} = \frac{2025}{2}.

  2. Evaluate each term in the denominator.

    • 2−42^{-4}:
    2−4=124=1162^{-4} = \frac{1}{2^4} = \frac{1}{16}
    • 303^0:
    30=13^0 = 1
    • 525^2:
    52=255^2 = 25

    The denominator is 116×1×25=2516\frac{1}{16} \times 1 \times 25 = \frac{25}{16}.

  3. Divide the simplified numerator by the simplified denominator.

    202522516=20252×1625\frac{\frac{2025}{2}}{\frac{25}{16}} = \frac{2025}{2} \times \frac{16}{25} =2025×162×25= \frac{2025 \times 16}{2 \times 25}

    Simplify the fractions:

    =202525×162= \frac{2025}{25} \times \frac{16}{2} =81×8= 81 \times 8 =648= 648

    The evaluated expression is 648.

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