math

can someone check and see if i did this right

An 800 g solution of acid and water contains 128 g of acid. What percent of the solution is acid?

100=128/800*100
128/800=6.25
6.25*100=625

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  1. Your first two equations are both wrong.

    128/800 = 0.16 = 16%

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  2. I'd set it up with %/100=part/whole, then multiply top to bottom across the equal sign and divide by the other number.
    x/100=128/800
    x=12800/800
    x=16
    Your 625 answer doesn't make sense, due to the fact that they want the percentage... if it doesn't make sense, it can't be right:)

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  3. <BSV=<ABS
    X=34
    Angle y is the sum of <asw and <wsc.

    <ASW=180-UAS
    =180-93
    =87

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