Melody

(5C1+5C2+5C3) * (6C2+6C3+6C4)

ASHRA

You are fortunate that CPhill did your homework for you. 

I thought you were rude and lazy when you posted three questions all at once that were obviously for homework.

NOW you have confirmed that you are rude by failing to acknowledge that it was CPhill who answered your questions (on a new post)

YOU "Found" the answers here because CPhill had already posted them!

You didn't even bother to thank him!! 

The Coupland family has six children and four adults. They want to get some corn dogs, but their van can only hold four children and two adults. How many ways can the people in the van be chosen?

6C4 * 4C2 = 90ways    That is assuming the van is full.

Yes I think guest is correct, thanks guest :)

Yes you are right .... 

I appologise for my incorrect answer :)

You are welcome but i did not really help you. I do not understand what your teacher wants. :/

Gibson, you would have been better off just to say thanks to guest , and give a point and then put your 'real' question as another post.

You never had to admit that your first post was an error. 

\(h(t)=(t^4-1)^3(t^3+1)^4\\ let \;u=(t^4-1)^3\\ \frac{du}{dt}=3(t^4-1)^2*4t^3\\ \frac{du}{dt}=12t^3(t^4-1)^2\\ let\;v=(t^3+1)^4\\ \frac{dv}{dt}=4(t^3+1)^3*3t^2\\ \frac{dv}{dt}=12t^2(t^3+1)^3\\ \text{now use product rule}\\ If \;y=uv\;\;then\;\;\frac{dy}{dt}=uv'+vu'\\ \frac{dy}{dt}=[(t^4-1)^3][12t^2(t^3+1)^3]+[(t^3+1)^4][12t^3(t^4-1)^2] \)

Now you can check it and simplify it yoursself.

If you have specific problems then let us know :)

I think that a part of your question is missing.

Hi Kennedy,

I really do not understand your question.

I do not understand the estimation method that you have described and ..

Why would you use any estimation process for this?

Plus is easy and the numbers are not very big.

So I know I am not answering your question   Sorry 

A typical brick is a rectangular prism with dimensions 4 in. x 2 in. x 8 in.

A typical bathtub is a rectangular prism with dimensions 60 in. x 30 in. x 18 in.

60/4=15      

30/2=15

18/8=2.25

The base layer is 15*15=225 bricks

There are 2.25 layers so   225*2.25=506.25 = 507 bricks.

alternatively

4*2*8=64

60*30*18=32400

32400/64 = 506.25 = 507 bricks