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Math Help - Logarithms please help!

  1. #1
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    Logarithms please help!

    log3 3 log4 5 = _______
    1)log4 5
    2)log3 3
    3)log3 4
    4)1/log4 5



    log10 10 = _______
    1)1
    2)2
    3)10
    4)0



    The value of (-3/4)^3 * (-3/4)^7 is _______
    1)(-3/4)^10
    2)(-3/4)^20
    3)(-4/3)^10
    4)(-3/4)^30


    The value of (-5/6)^4 (-5/6)^3 = _______
    1)-5/6
    2)-5/4
    3)-3/4
    4)-4/2
    on the first 2 problems, the spaces between numbers means that like... log4 5 is log small low 4 big 5
    which i think the 4 would be the base? idk..

    Just need help with these, they are on some pre-test problems and i have no idea how to do them.
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  2. #2
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    Quote Originally Posted by Minieke View Post
    log3 3 log4 5 = _______
    1)log4 5
    2)log3 3
    3)log3 4
    4)1/log4 5



    log10 10 = _______
    1)1
    2)2
    3)10
    4)0



    The value of (-3/4)^3 * (-3/4)^7 is _______
    1)(-3/4)^10
    2)(-3/4)^20
    3)(-4/3)^10
    4)(-3/4)^30


    The value of (-5/6)^4 (-5/6)^3 = _______
    1)-5/6
    2)-5/4
    3)-3/4
    4)-4/2
    for the first two, note that \log_b{b} = 1

    for the third ... note that a^x \cdot a^y = a^{x+y}

    for the fourth ... \frac{a^x}{a^y} = a^{x-y}
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