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JC Maths Higher Level Algebra H/W HELP

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  • 15-02-2013 10:56pm
    #1
    airbus125
    Registered Users Posts: 152 ✭✭


    Hi,
    Can someone please help me with my Maths Homework.
    Question 1, 2 and 4.
    Would really appreciate it as i am struggling right now.
    Thanks
    Aaron


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    #2
    mathsonline
    Banned (with Prison Access) Posts: 5 ✭mathsonline


    Which question?

    Can you show your own attempts please and we will give you some guidance.


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    #3
    Bluestrike
    Registered Users Posts: 191 ✭✭Bluestrike


    1=
    (a)(i) 2x(3x-4)-3(1-3x)
    6x²-8x-3+9x
    6x²+x-3
    (ii) 2(x+2)-3(x-3)=x+7
    2x+4-3x-9=x+7 You want to bring x's on 1 side and numbers on other
    2x-3x-x=7+9-4
    -2x=12
    -2x/-2=12/-2 (pretend / is a fraction so -2x over -2 and 12 over -2)
    x= -6
    (b) For this 1 i cant do very well on computer
    Draw a line with 4 to 14, then draw a circle around the point 4 on the line and point 14 on the line, draw a thin line a tiny bit above and just draw lines in between. That should be it i think (im not fully sure about the 5x-6 in middle)

    (except on line and not hollow)o_____________________________o
    4 5 6 7 8 9 10 11 12 13 14
    thats as far as i can draw except do the last bit

    (c)(i) 3x-6+5x+3x-6+5x
    (ii) 3x-6+5x+3x-6+5x=36
    16x-12=36
    16x=36+12
    16x=48
    16x/16=48/16 (same as before)
    x=3


    Thats all im doing for now, might do more later, Hope it helps


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