Math

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simifly. Use the commutative associative and distributive properties.

1. 175 + 37 + 25

2. 50(11 x 2)

3. 12/(99


can someone explain to me how to do these please?

  • Math -

    200+37 = 237


    50*2 = 100
    100*11 = 1100


    [12/(100-1)] [(100+1)/(100+1))]

    [1200 +12]/(10,000-1)

    1212/9,999 etc
    .1212121212........

  • Math -

    proof
    .12 + .12/100 + .12/10^4 + .12/10^6 ....
    geometric series, g = .12
    term 1 = .12/100
    term n = term(n-1)*1/100
    so r = 1/100
    so 1 - r = 100/100 - 1/100 = 99/100
    sum = g/(1-r) = 12/100 /(99/100) = 12/99

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