All Answers 358090 Answers

LOL..

It is Friday, how about that...

Well, I hope you have a good Friday...

dude i think he was talking about the food pie. 

-2(4)^x

-8^x

I think...

-1/6x(-2/9)

=0.37037037

:D

My issue with this equastion is that I don't know how to use the calculator.  My other issue is that at the end it is not *10 the 10 is a exponent.  So it is not x10 its the answer times itself 10 times.... 

Sat 16/1/16

1)  Humour for everyone   

     http://web2.0calc.com/questions/major-methhs-quetionws

2)  Jokes and Riddles  Thanks Hayley and Coldplay.

    http://web2.0calc.com/questions/it-s-quiet-on-here-hmm

3) A look at our forum :)        Thanks guest and Dragonlance   

    http://web2.0calc.com/questions/to-mr-andre-massow

4) Dragonlance antertaining us once again.  Thank you :)

    http://web2.0calc.com/questions/jokes-lyrics-anything

5)  Hayley's kind sentiments    

     http://web2.0calc.com/questions/it-s-friday

6)   The headache of slow clocks.     Thanks Melody and CPhill

      http://web2.0calc.com/questions/clock

7)  Interesting equation to solve.  Thanks CPhill and guest.

     http://web2.0calc.com/questions/solve-for-x_6408

8)  Cube root of -125   (basic answers only are relevant)  Thanks guest, CPhill and Melody.

     http://web2.0calc.com/questions/cube-root-of-a-negative-vs-negative-to-the-power-of-1-3_1

9)  Limit as x tends to infinity.   Thanks CPhill

     http://web2.0calc.com/questions/hello-i-need-help

10)  Make x the subject,   Thanks guest and CPhill

       http://web2.0calc.com/questions/an-exam-question

@@ What is Happening?  [Wrap4]   Fri 15/1/16   Sydney,  Australia Time 10:23 pm   ♪ ♫

A very good day to you all,

Answer credits are awarded to CPhill, Heureka, Coldplay, Solveit, Hayley1, xvxvxv, Okim2001, Olivia3.14..., rarinstraw1195, and not to be forgotten, Nauseated  

Interest Posts: 

If you ask or answer an interesting question, you can private message the address to me (with copy and paste) and I will include it.  Of course only members are able to do this.  I quite likely will not see it if you do not show me.

1)  Jokes on the forum,  thanks Olivia3.14.... , Hayley and CPhill    

Thanks guest - yes it looks like a great downloadable free calculator and it definitely has the degrees/minutes/seconds button  !

Here is the download page

Thanks Chris :D  

This is the post that is being referred to

Hi Rosala, it is good to see you on the forum :)

ok, I will take your word for it Nauseated.  Since it is not my question I have nothing to lose :))

I'll  let you into the hall of credit fame tonight.  Pat.pat. pat,  There is a good dog :)

prompted by this earlier post :

In 135.721 = t IN 1.05

\(ln (135.721) = t* ln(1.05)\\ t=\frac{ln (135.721) }{ln(1.05)}\)

Then just finish it on your calc.

WEll if you mean that you see complicated looking problems and don't know what do so then i do have one strategy that will help immensely!

So you want to know how many 38g bars of chocolate you need to buy for your recipe that calls for  500g of chololate????

now that looks yucky.

Lets make the numbers smaller

So you want to know how many 2g bars of chocolate are needed for your recipe that calls for  10g of chololate????

Well you would need 5 because 2+2+2+2+2=10

BUT

how can you put 2 and 10 together to get 5.?

That is simple it is  10 divided by 2 = 5

Now repleace the easy numbers with the original numbers

500 divided by 38 

500/38 = 13.1578947368421053

So you will need 13 and a bit bars of chocolate and you cannot buy a bit of a bar so you will need to buy 14 little bars of chocolate.  :D

1.34680135e-8

It (most likely) means

\(1.34680135\times 10^{-8}\)

8x^3−18x^2−15x+25  = 0  

Since the sum of the coefficients =  0, then 1 is a root.......using synthetic divsion, we have

That is interesting Chris I have not ssen it expressed like that before

I would have used factor theory,

since  f(1) = 8-18-15+25=0 then 1 is a root which means that (x-1) is a factor.   etc

There is nothing to solve. 

solve 3^2=147

9 does noty equal 147.  The statement is false.

Thanks rarinstraw that is a good explanation for ORDER OF OPERATION     lol  :)

The question didn't make sense anyway.... 5 points from me :)

I'm still trying to figure out why a tree has 4 legs and 2 trunks  

Not quite Hayley    

lcm of 15 and 60

Multiples of 15 are   15,30,45,60,75,.....

Multiples of 60 are   60,120,180,......

multiples are the ones in both lists and the lowest commone multiple is the smallest on in both lists.

SO

the LCM of 15 and 60 is   [drumroll]     60

Cool pic Chris :))

Nice, Melody......it's interesting to see how the Physics "formulas" can be derived using Calculus.......

Hi guest and Solveit,
 

A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.

Your formula is incorrect guest  .    The one you are thinking of is   v=u+at

u=2.5m/s,     a=4.2m/s^2      t=6s,      find s

The one you need is

\(s=ut+0.5at^2\\ s=2.5*6+\frac{1}{2}*4.2*36\\ s=15+2.1*36\\ s=90.6\; metres.\)

When I was at school I did both maths and physics.  

Now in physics I used the physics formulas    BUT     in maths ir was compulsory to use calculus!

So now I will do it with calculus.

\(x\; is \;displacement,\;\;\\\frac{dx}{dt}\;\;is \;velocity\;\;\;\\\frac{d^2x}{dt^2}\;\;is \;acceleration\;\;\;and\;\\t\;is\;time.\\ \)

\(\frac{d^2x}{dt^2}=4.2\\ \frac{dx}{dt}=4.2t+c_1\\ when\;t=0\;\;\frac{dx}{dt}=2.5\\ \quad sub\; in\\ 2.5=4.2*0+c_1\\ c_1=2.5\\ \frac{dx}{dt}=4.2t+2.5\\ x=\frac{4.2t^2}{2}+2.5t+c_2\\ \mbox{When t=0, x=0 so }c_2=0\\ x=\frac{4.2t^2}{2}+2.5t\\ When \; t=6\\ x=2.1*6^2+2.5*6\\ x=90.6\;metres \)

That is how you do it using calculus