Math Is Fun Forum

I suppose the one for the planets:
My Very Eager Mother Just Served Us Nine Pizzas

Is defunct now, huh? No Pizza for anyone anymore.

Nice

Think of the 4/5 and 5/8 as percentages. 4/5 and 5/8 convert to nice decimals; 0.8 (or 80%) and 0.625 (or 62.5%) respectively.

To find out what 80% of an hour is, you need to put it into other terms. An hour is 60 minutes so you need to find out what 80% of 60 is. You do that by calculating 0.8 * 60 minutes. It comes out to 48 minutes.

Do the same thing for the other one. 0.625 * 60 turns out to be 37.5 minutes.

You might know off the top of your head that 0.5 minutes is 30 seconds, but you can calculate it in the same way. 1 minute = 60 seconds. 0.5 * 60 seconds = 30 seconds.

So to bake it will take you 48 minutes. To clean your room will take you 37 minutes and 30 seconds.
As Ganesh points out, if you can leave the cake to bake and clean your room at the same time, then it will take 48 minutes. (and you get 10 minutes, 30 seconds to rest )

However, if you have to do them one after the other, then it's 48 minutes + 37 minutes + 30 seconds, which is 85 minutes, 30 seconds.

You can then subtract 60 minutes and add on an hour if you wish so that your total time is 1 hour, 35 minutes, 30 seconds.

Best of luck with your math.

I wasn't really paying attention (because I was laughing too hard) but I think every single one of those is in the movie Snakes on a Plane...

It's Post 'n' Bump and I helped!

The Who, U2 (stuff from 10+ years ago...), Green Day,  Nirvana, Foo Fighters, Red Hot Chili Peppers, John Fogerty, Pink Floyd, Billy Joel, Don McLean, REM, Queen, Eric Clapton, Janis Joplin.

My tastes are generally older than I am. Please excuse me while I cringe at the sheer onslaught of songs in the past 10 years that either involve some guy's sexual exploits or some teenage girl desperately trying to be strong and/or sexy. Can we get back to the songs with some kind of meaningful message now? And can singers stop labeling themselves as "R&B" if there's clearly no Blues in their songs? [/rant]

I like classical music, too. I truly respect the masters who could tell a story with an orchestra and without words. My favorite composer is Tchaikovsky, but my favorite piece is Beethoven's Fur Elise.

Let Op(p) be the Opinion[personal] of p, where p is the sum of all a Prime Minister's acheivements.

Then Op(p) = x, where x denotes the magnitude of the greatness of Prime Minister P such that:
P1 ≤ P(1+x) ≤ Pg

EDIT: I hope 100' isn't dissapointed anymore

Yes. The set of prime ministers is a finite set of [P1,Pg] where P1 and Pg are the min and max of the personal opinion function.

My Pg is Winston Churchill.

Let Kevin Rudd be a prime number P such that P is the only prime that is a Prime Minister...

Assume the rectangle is a square. If it werent, then it would have less than the maximum possible area.
If you drew a line from one corner of the square to the other, you'd see it passes through the center of the circle. This means that the diagonal of the square is the diameter of the circle.
This diagonal also makes a triangle with two sides of the square, so we can use the pythagorean theorem to work out the sides of the square. Because the sides are the same, your equation looks like this:

d² = s² + s²
d = 2r, so:
(2r)² = s² + s²
(2r)² = 2s²
4r² = 2s²
2r² = s²
√(2r²) = s
√2* √r² = s
r*√2 = s

So the side of the square is the square root of 2 (approx 1.414) times the radius of the circle.

1+1=2...

That's a little too convenient, don't you think?