All Answers 358087 Answers

Let N be the number.....so ....

I'm reading this as

2(N - 7) ≤  -27

Ok yes sure! :) I appreciate it really, for all of you guys help! 

one way:

1*10^-1=

1*10^-1 = 0.1

12x + 2   = 74       subtract 2 from both sides

12x  = 72              divide both sides by 12

x  = 6

ok NSM :)

CPhill is right.  Hectictar knows what she is talking about.

Please encourage her, and others, to explain answers more if you want/need  more explanation.

I would like this forum to not only teach maths but also teach people how to explain maths more effectively.  So if you do not understand then try and get the person who already answered to explain more.  Learning is more effective if it is interactive. :)

Plus, all answerers like return questions from the asker, it makes us feel appreciated and like someone is actually trying to learn from us and that is definitely what we want !    

Thanks, hectictar and Asad.....!!!

Here's another method.....

32 -  12   = 20     20 doesn't divide 12 or 32....so  subtract the two smaller numbers

20 - 12  =   8         8 doesn't divide 12 or 20 .......subtract the two smaller numbers again

12 -  8   =   4         4 divides 12 and 8 , so.....it's the GCF

(-2)² = 4

-2² = -4

Well.....tt's a little hard to tell.....but one side of the deck  =  sqrt(140) =  2sqrt(35) ft.

So.....the total perimeter is  4 *2sqrt(35) ft  = 8sqrt(35) ft

Under the first option only 1/2 of the perimeter of the deck needs to have railings  =  2 * 2sqrt(35) ft  =

4sqrt(35)ft

Under the second option, 3/4 of the perimeter needs to have railings  =  3 * 2sqrt(35) ft  = 6sqrt(35) ft

So......the first option is better......and the minimum length needed is 4sqrt(35) ≈ 47.33 ft

I know I appreciate her help I thank her.

thanks!

Thank you so much!

I understand and yes I come to learn actually, I like the way CPhill explains it cause then I start to understand it and start more practice after how he actually shows it step by step. I'm not just using it to cheat if you get understand.., I'm just trying to get help really. No one really explains things throughly like CPhill so I'm sorry if it's causing any trouble with you. My apologies. 

If hectictar has answered your question/s then you should ask her to explain it more if that is what you want.  Do not forget to thank her. 

Thank you CPhil! 

It's only because of all that double-checking!!

But "usually" is a key word here! Lol 

The correct answer is 4.

Hi Not so smart,

Maybe CPhill will do this for you becasue he is a sweety but you should look at the answers yourself.

If you think they may be wrong then you should ask questions.

If you do not have enough understanding to do this then the question is above you and you should just accept that you cannot do it.  If you take anyone's answer without fully understanding it and present it as homework done by you. That is just outright cheating!

I am not trying to be mean, I just want this forum to be used as a place people learn. Not as a place where people copy and learn nothing.

Yep, NSS, hectictar answered both of them correctly......she's usually pretty accurate....!!!!

trust me it's really fun for people who study hard

its 4

factors of 12: 1, 2, 3, 4, 6, 12

factors of 32: 1, 2, 4, 8, 16, 32

greatest common factor: 4

how would you solve 2x+3y=7x-4y=3?

\(2x+3y=3\\\underline{7x-4y=3}\\y= \frac{3-2x}{3}=\frac{3-7x}{7}\\21-14x=9-21x\\7x=-12\\\color{blue}x=-\frac{12}{7}\\\color{blue}y=\frac{3+\frac{24}{7}}{3}=\frac{15}{7}\)

\(-\frac{24}{7}+\frac{45}{7}=3\)

  !

Tired how about you?

Ha, same!

That would be one hundred octovigintillion,