JC Maths Higher Level Algebra H/W HELP

airbus125

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

mathsonline

Which question?

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

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