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ill help or shall i say ill try

brb

I wish I could show a pic, it's Pythagonean and Theorem.

you want to learn pythagoras theorem or u want to know how \(x=\sqrt{79}\) ??

and x^2 = 25+49 = 74

not 79

then u need to post the entire question clearly....

because sqrt 74 = 8.6

|dw:1356724058436:dw|
whats need to be found ?

if x is to be found, its 8.6

again pythagoras theorem
|dw:1356724579218:dw|

Answers are 6.3,7.1,14.1, and 17.1
Would it be 14.1?

yes :)
did u understand how ?

For any right angled triangle,
|dw:1356724844491:dw|

did u get that ?

u had a=b=10
\(c^2=10^2+10^2=200 \\ c=\sqrt{200}=14.1\)

which part u have doubt with ??

Oh okay I see now thanks :) What is the value of x? \[13x-2(x+4)=8x+1\]

So then I would start with 11x-2x+8=8x+1 right?

Then add 2x to both sides? 2x+2x, 2x+8x

-2(4)=-8
and not +8

I'm lost at this part
11x-2x+8=8x+1
+2x +2x
11x+8=10x+1
-10x -10x?

I get it so the answer would be 2?

If 3(x+2)-2(x+1)=8 the value of x is? I need help pls.

It's okay :)

would be 4 right?

3(x+2)-2(x+1)=8
3x+6-2x-2=8
x+4=4
x=4
yes :)

*x+4=8

Wait for that last one wouldn't it be 2 because 3 goes into 6 twice?

Pls solve this someone has a container with 4200 millilitre of waters are in someone's container

sorry, i didn't get your doubt ?
3x=9
so, x=3

Oops sorry Line 5 is suppose to say x= then what I put.

3(x+4)=18
x+4 = 18/3 =6

so, mistake in line 3, while distributing.

if more Q coming up, then close this and ask it in a new post...

Okay thanks.

welcome ^_^