Melody

Hi EP and gurst

 If Jess had 120 jelly beans, and ate 3 5 of them, how many did he eat?  What fraction of jelly beans does Jess have left?

Ithink our guest means Jess ate  3/5 of them   

She ate 3/5 so she must have 2/5 left because     3/5+2/5 = 1    That is 1 big pile of 120 jelly beans. :)

 0.12 = (n - 6500) / 6500

\( 0.12 =\frac{ (n - 6500) }{ 6500}\\ \text{multiply both sides by 6500}\\ \text{then add 6500 to both sides}\\\)

Your model train has one engine and eight train cars.  Find the total number of ways you can arrange the train. (The engine must be first.)

8! = 40320

do 19 on 2500 can be divison more

19 is a prime number and it does not go into 2500 so

19/2500 cannot be simplified  

Thanks HSC  

Guest, your notation is not right.

 It should be

g(x)=2x^2-20x+53

find f(4)

And just like HSC said you now have to replace all the xes with 4s and find the answer :)

that is

f(4)=2*4^2-20*4+53 = ??

This is what I think

F=ma

So the force needed to lift the ball would be 7.5*9.8 kgm/s^2. (Newton's)

Work=F*d = 7.5*9.8*1 kgm^2/s^2  (Joules)

Thanks Chris, I always like it when these sorts of problems are uploaded.

There is usually at least one person, like Jonatho,n that takes an obvious interest in these puzzles.

Thanks Jonathon  

But for every person who displays interest there are bound to be a few more (like me) that think about it more quietly. :))

i could just be a veariable like x or y or a

or

i could be an imaginary number equalling sqrt(-1)

so 9i = 9*sqrt(-1)

Draw a number line

Start at 2 then count 4 units in the negative direction.  Where do you end up?