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tank yu my amigo

4 / 8  = 1 /2

i  feel good 

y=0

(x-1/2)^2 -13.75 = 0   add 13.75 to both sides

(x - 1/2)^2  = 13.75      using the square root property we have

x - 1/2  = ±√13.75        add 1/2 to both sides

x = ±√13.75 + 1/2   =   about   4.208  or about -3.208

Using

A = 18e^(kt)... where A is the amount after t hours,  we have

9 = 18e^(k*15)    divide both sides by 18

1/2 = e^(15*k)    take the ln of both sides

ln(1/2) = ln e^(15* k)   and by a log property, we can write

ln(1/2) = (15k) lne    and lne = 1    so we can drop that part

ln(1/2) = 15k        divide both sides by 15

k = ln(1/2) / 15 = -.0462

So after 60 hours, we have

A = 18e^(60* -0462)  = about 1.126 g

Here's the graph of the situation.....where x = t   ....the relevant values are where x ≥ 0

çözersen bana da yollar mısın. if u solve it pls send me the answer cagkan.ucan@ozu.edu.tr

9+10=19=10+9

I think you mean about 11.57 days, Anonymous.....which is about the same as my answer of 11 + 1/2 days...

thats easy to answear, just remake 1000000 from seconds to whatever you want.

devide it by 60 to get it in amount of minutes and then devide it by 60 again to get the amount of hours.

finally devide it by 24 to get the amount of days (wich is about 11,57 seconds)

$${\frac{\left({\frac{\left({\frac{{\mathtt{1\,000\,000}}}{{\mathtt{60}}}}\right)}{{\mathtt{60}}}}\right)}{{\mathtt{24}}}}$$

There are 3600 seconds in 1 hour

Then, there are 24 x3600 = 86400 seconds in a day

So

1,000,000 / 86400  = about 11 + 1/2 days

We can always tell if something is a solution.....if we "plug" it in and it "works,"  then.....it must be the solution !!

So we have

-3x+y=-21

 x+y=3        

Notice that we can rewrite the second equation as y = 3 - x    and substituting this into the first equation for y, we have

-3x + (3 - x)  = -21  simplify

-4x + 3  = -21     subtract 3 from both sides

-4x = -24       divide both sides by -4

x = 6

And putting this into y = 3 - x  ... we have ....   y = 3 - 6  = -3

So the solution is  (6, -3)

You should check that this is correct by substituting these values into both equatons.....

z =( k y ) / (w* x)    we need to solve for k.....the constant of  proportionality

So we have

-18 = k (12) / (2 * -2)

-18 = k (-3)     divide both sides by -3

6 = k

So, the equation is

z = (6y) / (w*x)

Bertie, I am hoping you can clear up some confusion for me please.

Obviously is there are 6 different b***s and 3 different boxes and any number of b***s can be put into any box then the number of possibilities is  3^6 = 729

Looking at all the different possibilities, yours must be correct because mine (and Chris's) dont add up to 729.

these are the ones that are not correct

1, 1, 4        put the boxes in a line.  there are 6 possible b***s that can be put in the first one, then 5 b***s that can be put into the seconds one and the remaining b***s go in  the last one. that is 6*5=30

Now that line could have been formed in 3!=6 ways.  So why isn't it 30*6=180 ways?      (you got 90)

Similar confusion comes up for 3,3,0 and 2,2,2. 

It has got to be something to do with more than one box having the same number of b***s but I don't get it.

1/4 of the number 24 is 6

thank you....

Good job, rosala.....

Yep I think we are all in agreement on this one.   We all keep good company :))

LOL  I just realised that I have answered this same question in two different places and got 2 different answers.

Well this was definitely one of my answers and it does make perfect sense.

I wonder if my other answer makes perfect sense as well ? 

There is always lots of humour to be had with probability and the various topics that go with it.  :)))

donno about other forums....but this one has PRIVATE MESSAGES.....CPhill i mean MESSAGES!

ok so wed do it like this!

65/100 x 52

if you cant do it tell me?

Really, rosala!!!......Why would anyone come to a math forum who doesn't like math ??? (Unless they just needed homework answers......)

if math is so boring then what are you doig here?hun?whyd u make an account?

honestly...its not beoring...its us who dont get it!