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11.49^5x+2=(1/7)^11-x

\(11.49^5x+2=(1/7)^{11}-x\\ 11.49^5x+x=(1/7)^{11}-2\\ x(1+11.49^5)=(1/7)^{11}-2\\ x=\frac{(1/7)^{11}-2}{(1+11.49^5)}\)

x approx equal  (1/7^11-2)/(1+11.49^5) = -0.0000099868306047

EP i think you are assuming that this is a regular octagon which it may well not be.

I have always enjoyed mathematics recreationally.

Many people do.  

hi Bleh, 

I can see you have good manners and you are trying to learn, so I will try to help you   

Out of 8 boys and 6 girls in a high school, a team of seven students is selected. What is the probability that three boys and four girls are selected? 

There are 14C7 ways to chose 7 students  

nCr(14,7) = 3432

Now, there are 8C3 ways to choose 3 boys and 6C4 ways to choose 4 girls

Multiply those together and you get how many ways to shoose 3 boys and 4 girls.

nCr(8,3)*nCr(6,4)= 840

So the prob of getting 3 boys and 4 girls is  \( \frac{840}{3432}= \frac{35}{143}\)

You can check your own graphs with this calculator   

The question should have stated where the displacement they wanted was from.

But it is fair to assume that they meant from the starting point.

The distance travelled is 3 km

BUT

He has finished 1 km due south of where he started so the (absolute value of the)  displacement is 1.      

Yes it does look good, thanks EP.

Guest, here is a site you should familiarise yourself with.  It is very easy to use and if you have probs you can ask us.

Hello CDorrell,

I can see you have already edited this question twice (after it is anwered) and and each time you have changed it to completely different question.

This is extremely rude. 

Questions should nrarely be editied and they NEVER should be entirley changed. The facility is intended only for when people make minor posting errors and even then they shoud make it clear what changes they have made.

Please do not edit your questions, or answers, in any way that can be considered rude or inconsiderate, in the future.

At 5:00 P.M. on a Friday, Hal got locked in the vault. he was there for 5040 minutes before it opened. Om what day did it open?

5040/60 = 84 hours

84/24 = 3.5 days

5pm Frid+half a day =  5am Saturday

5am sat + 3 days = 5am Tuesday

Open on Tuesday   (5am)