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# Maths question .....

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7y, 2m agoPosted 7 years, 2 months ago
9X+5=3X+41
7y, 2m agoPosted 7 years, 2 months ago
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(26)
#1
42 .
#2
x = 6
#3
9x+5 = 3x+41
9x=3x+36
6x=36
x=6
#4
x=6..
#5
i got 6x = 36 and then some one sed they got 6 = x and i thought i was wrong but its the same lol !!!
#6
6.......
#7
aah96
i got 6x = 36 and then some one sed they got 6 = x and i thought i was wrong but its the same lol !!!

s'ok. nice to see a question i can do...

currently stuck on

sin2x = tanx
1-cos2x
#8
emhaslam
s'ok. nice to see a question i can do...

currently stuck on

sin2x = tanx
1-cos2x

Also 42.........

:-D
#9
xxx X2

= xxxxxx

6x

x6

x = 6 wut? lol
#10
emhaslam
9x+5 = 3x+41
9x=3x+36
6x=36
x=6

spot on bud :thumbsup:
#11
sancho1983
Also 42.........

:-D

cheers. i've got no other answer to put down.

* several days later wastes time explaining to teacher why he put down 42... well i posted it on a maths forum and this really clever man told me... *
#12
looooool , i feel clever :-D
#13
59.....
#14
x=6.....
#15
emhaslam
s'ok. nice to see a question i can do...

currently stuck on

sin2x = tanx
1-cos2x

Using the double angle fourmulae would make that simpler to work out. :thumbsup:
#16
*quickly exits this thread due to being too thick*
#17
9X+5=3X+41
9x-3x=41-5
6x=36
x=6
Teaching Intermediate one maths!
#18
wii expert
*quickly exits this thread due to being too thick*

+1 :oops:
#19
spic
Using the double angle fourmulae would make that simpler to work out. :thumbsup:

i've got it to

1 = tanx
tanx

so

1= tan2x (tan squared x) but not sure then. will leave it there me thinks....
#20
wii expert
*quickly exits this thread due to being too thick*

4lyons09
+1 :oops:

im 14 , and i can do this !!!
#21
aah96
im 14 , and i can do this !!!

I left school years ago. Not something I use everyday!! No doubt the majority are the same.
#22
4lyons09
I left school years ago. Not something I use everyday!! No doubt the majority are the same.

True && things are changing !!
#23
emhaslam
s'ok. nice to see a question i can do...

currently stuck on

sin2x = tanx
1-cos2x

sin2x - tanx =
2sinxcosx - sinx/cosx =
sinx(2cosx - 1/cosx) =
0

So sinx = 0, which happens when x = 0,180 or
2cosx = 1/cosx
cosx = +/-(1/root2)
x = 45, 135, 225, 315
#24
is the initial equation

sin(2x) = tanx
1-cos(2x)

or is it

sin^2(x) = tanx
1-cos^2(x)
--------------(sin squared x )over (1 minus cos squared x) equals tan(x)
#25
starsparkle2311
aherm, where is your mum? Asking for answers on the internet indeed!!! You should be locked in the cupboard, working it out for yourself:w00t:

Nothing learnt from easy answers babe:)

im not cheating !!!! :w00t:

i knew the answer but some one told me another answer and i was sure mine was right but there both right lol !!

im not bad at algerbra :)
#26
x=6...