9th Algebra

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Im in 9th grade algebra. and we are learning adding and subtracting real numbers. im stumped on a couple of problems. I get confused when i see the absolute value lines. Does that change the munber? Do i just go on with the problem as if they werent there?
And i have NO idea how to do 2/5 - 7/8?!?

  • 9th Algebra -

    2/5 - 7/8

    = 2*8/5*8 - 7*5/8*5

    = 16/40 - 35/40

    = -19/40

  • 9th Algebra -

    7/20

  • 9th Algebra -

    1. find the latreal area of a cylinder of revolution if its altitude is 5.5 inches and the diameter of its base is 7 inches.

  • 9th Algebra -

    idk im in 9H soo idc either i juss need my ? answered duhhh!!!!! y else wouldi b here

  • 9th Algebra -

    what is 10 to the second power in standard form? Please answer by the end of today. Please and Thank You

    Corinne Moore

  • 9th Algebra -

    O and btw im in 8H buhh its high skool work so yahh Earth Sci all that good stuff
    Corinne Moore

  • 9th Algebra -

    y=-2x^2-3

  • 9th Algebra -

    Quadratic functions quest

  • 9th Algebra -

    y=-2x^2-3

  • 9th Algebra -

    Put these numbers in order from least to greatest.
    -
    1
    2
    -
    3
    10
    2
    24
    30
    Submit

  • 9th Algebra -

    1223102430

  • 9th Algebra -

    Make an input-output table for the function use 0,1,2,3,4,5 as the x value.

    Y=5(15-x)

  • 9th Algebra -

    Start with a numberX and 12,then divide by 4,next subtract7, and finally multiply by 2. a. convert the description to an algebraic expression. b.ifx=5,what is the value of the expression?

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