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Thread: Some College Algebra Problems! +Rep!

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    Some College Algebra Problems! +Rep!

    These are the questions i cant figure out how to do on my homework which is due before midnight :x +Rep to everyone with a correct answer!



    2. Use the properties of inequalities to solve the inequalities. Write the solution set using set-builder notation
    a. 5x + 3 < 2x + 2
    b. −4(x − 5) ≥ 2x + 15

    3. Solve the compound inequality. Write the solution set using set-builder notation.
    a. 2x + 7 > −16 and 2x + 7 < 11
    b. 0 ≤ 2x + 10 ≤ 22
    c. x + 2 > 2 or x + 3 ≤ 1
    d. 5x − 4 ≤ 56 or 4x − 8 ≤ 16



    5. Use interval notation to express the solution set of the inequality.
    a. |2−5x| ≥ 17
    b. |2x − 6| ≥ 2
    c. | 2x − 3| < 1
    Last edited by kooldude888; 02-17-2013 at 08:59 PM.

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    1.

    x = 29/22 + 1/22sqrt{1271} i

    That's all I've got. xD

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    kooldude888 (02-17-2013)

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    @kooldude888,

    #4 is (-7, 3) I believe. Because it can go all the way down to -7 without touching it, and all the way up to 3 without touching it. Open circles on both if you were doing it on a number line. I'll keep thinking about #1-3

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    kooldude888 (02-17-2013)

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    1. x= (29+isqrt(1271)/22), (29-isqrt(1271)/22)

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    kooldude888 (02-17-2013)

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    thank you for helping guys i appreciate it!!! i just suck at math xD

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    Toasted (02-17-2013)

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    Will add stuff as I keep on working
    Also I haven't used set builder notation in forever
    2)a) {x:x<-1/3}
    b) {x:x<5/6}
    3)a){x:-23/2<x<2}
    b) {x:-5≤x≤6}
    c) {x: x≤-2 or x>0}
    d) {x:x≤12}

    ---------- Post added at 06:42 PM ---------- Previous post was at 06:32 PM ----------

    5)a) (-INF,-3]U[19/5,INF)
    b) (-INF,-2]U[4,INF)
    c) (1,2)

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    kooldude888 (02-17-2013)

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