Melody

People have to request access there.  Most people will not do that. 

Yes. that is what I assumed  

How about responding to Gino's answer to your last question first?   

He asked you to interact with him.

y(0) is the y value when x is 0.    So is this the y intercept?    What do you think?

Hi Solveit  

o you mean:

There are 10 billiard balls

One is taken and not returned.

Then a second one is taken.

How many ways can the two be taken?

there are 10 ways that the first one can be taken and then 9 ways the second one can be taken so that is 

10*9 = 90 ways

Note: If order does not matter then you will have to divide this by 2 and get  45 ways.

Here is the original question.

There is no question here. 

If a right-angled triangle is inscribed in a circle then the hypotenuse must be a diameter.

I can prove it with calculus but the longest perimeter will be when the other two sides are equal. Let them be x

100^2 = 2x^2

solve for x then find the perimeter. 

Where is the pic?