Well I know many people wont like this topic if they hate school but im posting ti anyway because there are people who do like it and may want to do it.

Here are the rules

You can make any question as long as it math realted

You cannot post another question if the current one is not answerd or is "skipped"

Try to make them not to hard like 8th grade math would be the highest if you have one you are unsure of pm it to me.

Happy math solving!

First problem

The square root of 64 is what?

lol, I know you said not too hard, but still... the answer's 8. ok, um,

4x+10=34 what's x? (This is very easy)

X=6.
P=4n-32

uuh, eragon.. what do we have to calculate right now?

that's a stupid question Eragon109 It could be anything. Well, there's loads of answers for that, but this works:

P=8
n=10

Next question:

give the formula for finding the circumference of a circle (I don't think there's a symbol for pi on keyboards, so just write pi instead)

Diameter x pi

What's the next question?

ok, Im young so I don't know that much of math (thats complicated)
so 6 to the 5th power

7776

convert 4/9 to a decimal (2dp)

uhh.. im sorry im young.

i hate math!!!!!!!!!!!!

...0,444
...___
9/4
...0
----- -
...40
...36
------ -
.....40
.....36
-------- -
.......40
.......36

Thats a nice way to type it out. I'm thinking of one thats not too hard, but not too easy...I'll get back on this.

Ok, I got one. Imagine a rectangle. One of the long sides is labeled 4x and one of the short sides is labeled 3. Write an expression for the perimeter of the rectangle. (This doesn't mean the answer, just an expression). This should be easy.

actually u should know maybe u were learned it a long time ago so u don't know the answer is p=8

the square root of 225

15

kind of a riddle:

"My oldest is twice as old as my youngest."
"I am four times as old as my oldest, but that sounds young
cuz my wife is seven times as old as my youngest."
"But in reality she is 4 years younger than me."

What are our ages from old to young?

you skipped my question!

no skipping questions people now lets do another one

Ok, let's do this one seeing as it was skipped.

2(4x) + 2(3)
or
8x + 6

is my question(/riddle) up now??

Hemm... 3 variables...

oldest = x
youngest = y
myself = I
my wife = W

Equation:
x = 2y
I = 4x
w = 7y
w = I - 4
therefore I = 7y+4

x=2y
I=4x
------- +
x+I = 2y + 4x

x+(7y+4) = 2y + 4x
5y -3x + 4 = 0

Because x=2y , thus:

Y=4
X=8
W=28
I=32

correct! now what's the next question?

find the SA(surface area) of a cilinder.

Base radius:6in.
Highth:24in. (not the best picture )

______6in
l.....----l
\_____/
l..........l
l..........l
l..........l 24 in.
l..........l
l..........l
---------
\____/ Hint:
fourmulas used:A=bh,C=¶D(pi symbol is on your character map)

um, I made it 904.7786842338604526772412943845 I hope it's right.

what's the perimeter of a square with area 196?

S^2=A
A=196
sqrt(196) = S
S = 14
P = 4(S) (because its a square)
P = 56

56.

Evaluate the expression without using a calculator..

log 243 ^ 2
3
(Log base 3 of 243 ^ 2)

Problem solving of cilinder.

Top,bot.
Formula:

A=bh
A=12x24
A=288
2A=576

Around
Formula:

C=¶D
C=3.14x12
C=37.68

A=bh
A=37.68x24
A=904.32

_904.32
_576.00
_037.68
+_____
_1518

Answer: SA=1,518in²

Guys need to think math not algebra lol dosnt go that far into equation/calulations

yes, well I use centimeters, you use inches. It's difficult lol Why can't America go metric? lol

yeah, it would be a lot easier like that..

2x(squared)-16x+60

put into unfactored form, if u know wat i mean like (2x+something)(x+something)
i already gave u guys two answers. figure out the 'somethings'

soo leme see if I read this right the problem is 2x²-16x+60 right?

_16x+60
-16x=-16
________
x = 54

and x²= 54²=2916

If its wrong blame my math teachers hes teachen us a werid ways to do math problems

2x²-16x+60

Do you know about ABC formula?? It's very powerful to solve a problem like this, especially for problems that can't be solve with (x+...)(x-...) The problem is.. I'm not sure I type the right formula--coz the last time I used it was about 4-5 years ago !!

.....................___
x1,2 = -b ± \/4ac
.................2a

..........................._____
x1,2 = -(-16) ± \/4.2.60
.................2.2

......................___
x1,2 = 16 ± \/480
.................4

x1= 9,477
x2= -1,477

Well I am currebtly learning it but we havn't gotn that far I think cause all i could fallow wer the first to steps I dnt see how u got the last

ummm...not exactly. smart people always make simple problems harder than they actually are lol!!! well u did solve for x but the actual answer is (x-6)(2x-10). jus factor it and wat do u get? the question!!! lol

no idea but i'm in top set!!
America has different things to us

we jus slack off all day long. i love it. but it's kind of sad

ok new question jst to get back on topic. umm...

there are 25 marbles in a bag

10 red
10 blue
5 green

a.Whats the probubility of pulling out a red one?

b. What the odds of pulling out a blue one?

Hint: This ones a trick question so calculate wizely!!

a. 10 out of 25, so that would be a chance of 2 out of 5

b. since it would seem too easy to just be the same as answer a... I think you mean first taking out 1 red one, THEN take a blue one, so that would be:
10 out of 24, which is 5 out of 12 simplified..

=(x.2x)+(x.-10)+(-12x)+60
=2x²-10x-12x+60
=2x²-22x+60

Lil Killer how is this..? Am I count right?? I know the formula is.. something like

[ x² + (a+b)x + a.b ]

But I remember there's some exception. If you got a number on x² (in these problem set was 2x²), it applied a totally different formula to figured the root, but I forgot how..

Anyway, my previous answer was false... It seems I mistaken the formula a bit.. You can asked your teacher about the formula I wrote above and find out the right one !

that's pretty much the right formula

12km ----?dm

1km = 1000m
1m = 10 dm

so 1km = 10000 dm

and 12km = 120000dm

Looks like calculating with discriminant (no idea what's the name in English)...it's quiet easy when you know how

are you people sure this is 8th grade level

I'm not sure what is 8th grade lvl

anyway an easy one. 4x+6=3x-4

x = -10

4x-10+6 = -34
3x-10-4 = -34

(I LOVE graphical calculators.. )

well, this is part of some coursework we had to do.

Imagine 9 little 1cm square cubes. They are stacked into a larger 3x3x3 cube. This big cube is painted blue. This is repeated with big 4x4x4 and 5x5x5 cubes which are painted blue. What is the nth term formula for how many small cubes have 2 blue painted sides? (If you have a logical mind, you don't need maths for this, just common sense. If you're good at maths, but not common sense, use maths. If you're not good at either, go away lol jk) Oh yeah, and if the cube is 3x3x3 it is the 3rd term, if it is 4x4x4 it is the 4th term and so on...

is it 9x9x9 ???


ok 9 to the 1021 power x 10 x2 divided by 0.12

it's a formula, that has n in it and some numbers and stuff, so no. If you give up, just say.

do you mind if I'm working here..? maybe it's kinda hard to follow..

3x3
top: 1*4
side: 1*4
bottom: 1*4
total = 4*3 = 12

4x4
top: 2*4
side: 2*4
bottom: 2*4
total is 8*3 = 24

5x5
top: 3*4
side: 3*4
bottom: 3*4
total is 12*3 = 36

caterpillar... I got it !! it's obvious !!! 12(n-2) !!

yay! congratulations lol

heres my ( fairly simple) problem

(25 37 58)....(84 87 58)
(19 45 53) + (65 73 78)
(73 34 13)....(23 45 88)

I don't get it... what are we supposed to do with it?

uhhh i have no idea

Is that suppose to be a matrix ...??

yes its a matrix

which means.... ??

has nobody done matrices yet?!?!??they are 8th grade math!!!!!>_<

heres the anwser:

(25 37 58)....(84 87 58)
(19 45 53) + (65 73 78)
(73 34 13)....(23 45 88)

([25+84][37+87][58+58])
([19+65][45+73][53+78])
([73+23][34+45][13+88])

(109 124 116)
(84 118 131)
(96 79 101)

its really simple.........

It may be 8th grade.. but I'm NOT from america...
Which means the system is different here!!!

What's the difference between grades and years? oh, hang on, i found a table:

http://www.education-otherwise.org/Triv ... 0Chart.htm

Where it says KS1 is where year 1 is and it just goes up from there.

That means america's grade 1 is england's year 2. America's grade 8 must be england's year 9. Ok, that means I'm year 9/8th grade.

LOL ok here's mine !

(1 2 2)....(2 2 1)
(8 3 5) x (4 4 7)
(6 7 7)....(8 5 2)

(2 4 2)
(32 21 35)
(48 35 14)

K, think I've got it now... (still... we haven't got this at school..(yet?) and I'm 17!! (18 this year..))

yeah, they are pretty simple; i learned them when i was 13!

Yeah, now that I've seen them it is indeed VERY easy.. I dunno why we didn't learn them at school..

I'll have a math problem soon

Sorry, honey but to multiply with matrix has a completely different way to solve..

~Wrong Answer~

PS: I studied this on my 10th (or 11th) year if anyone give up I'd happy to tell you so you'll be the first in your year who knows how to solve this :p

Yep, Matrices are miltiplied first row, first column, first row second column. Second row, first column, second row, second column, etc. Long process, for no reason. Matrices Sux0rz

-Noel

??? whoops, i forgot.............

i'm pretty good in math.

Since nobody else will solve this.. I will..

(26 20 19)
(68 53 39)
(96 75 69)

There!

Aand..... we have the WINNER !!

ok, I've got a nice bit of high-level trigonometry. If you need a clue, ask me. find the side marked x.



ps. sorry for the messiness lol , the measurements are 8m on the left, 5m on the right and the angle is 43. x is on the bottom

Awww, why does it have to be 43 ? Why can't it just be 45 ?

Now I have to calculate more..

hehehe- you can round the answer to 1 decimal place

It can be solved by cosinus law (in which I forgot it years ago)

5.523 m ??

yay! well done lol I knew somebody would realise it went by the cosine rule