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Thanks I knew I had to be forgetting something. So I got 0.003872 x 305= 1.18096 it states round one place so 1.18 ft squared per person

It asks for the percentage of the entire budget....sooo

the entire budget is 3.8 trill = 3,800,000,000,000  (rounded to 4 trill)       the foreign aid is rounded to 30000000000

  30,000,000,000/4,000,000,000,000   x 100% = .75 %

Can you do the other part without the rounding?

Sorry...I see you already did it ...BRAVO !

13.5 m/s   x 1km/1000m  x  3600 s/hr  = 48.6 km/hr

There ARE 27,878,400 sq ft in a square mile...what you forgot is there are 305 square miles to multiply by in NYC.....Try that and let us know what you get !    

For some reason when I put that answer in it's wrong 0.003872 I try rounding to 0.00387 wrong I tried 0.0039 wrong.

I even tried 0.004 all wrong?

So that is 7 200 000 000 people in 27,878,400 square feet

You want to know how many square feet / person.     (area divided by number of people)

Just use the units to help you.

27,878,400 / 7200000000      (sqrare feet per person)

Now just do the division

27,878,400 / 7200000000 = 0.003872 square feet/person

I'm wanting to learn not just get answers. Thanks for your help!

Right answer is 2.5

I assume you are learnig about Dimensional analysis.....one more...

 (we aren't really here to do your homework.....we are here to help YOU do YOUR homework....i.e. "learn")

18690000 bbl/day x 42 gal/bbl  x 1/306 000 000 ppl = 2.565 gal/pp  each day

(Guest was correct...I had a typo and used 360 million people instead of the correct 306 million)

Thanks for showing me that Quazars.  I hope someone can help you. :)

30 days  x  24 hr/day  x 3600 s/hr  x 2 blog/s = 5 184 000 new blogs

186000 mi/s  x  5280 ft/mi = 982080000  f/sec      now divide by 1 million

=982.08 ft/microsec

⁴√[ 3xy^3 ]  /  [ x^3y^4 ]  =

[  3^(1/4) * x^(1/4)  * y^(3/4) ] / [ x^(12/4) *y^(16/4) ]  =

3^(1/4)  / [  x^(11/4) * y^(13/4) ]  =

Multiply  top/bottom  by  3^(3/4)  =

[ 3^(1/4) * 3^(3/4)] /  [ x^(11/4) * y^(13/4)  * 3^(3/4) ]  =

3 / [  x^(11/4) * y^(13/4) * 27^(1/4)  ]

Write back in radical form

3 / ⁴√ [  27  x¹¹ y¹³ ]

⁴√[ 27xy^3] / [ 3xy^2]      writing this in an exponential fashion, we have

[ (3^3)^(1/4) * x^(1/4)  * y^(3/4) ]  /  [  3xy^2]  =

[( 3^3)(1/4)  * x^(1/4) * y^(3/4)  /  [  (3^(4/4) * x^(4/4) * y^(8/4)  ]

[ 3^(3/4)  * x^(1/4)  * y^(3/4) ]  /  [  3^(4/4) * x^(4/4) * y^(8/4)  ]  =

{ Using   a^m / a^n  =   a^(m - n)  }

1  /  [ 3^(1/4) * x^(3/4) * y^(5/4) ]   write back in radical form

1 / ⁴√ [ 3x³y⁵ ]

Thanks!

This question was inspired by this post https://math.stackexchange.com/questions/20717/how-to-find-solutions-of-linear-diophantine-ax-by-c/20738#20738

I didn't find the explanation that helpful so I was hoping someone could clarify or even put it into a more systematic setup where it can be solved by a matrix inverse.

I do not think there is a way.  I cannot see why there would be a way but I could be wrong.

Hi SpaceModo,

I'll do one of them.

\(\frac{{2\sqrt[6]{2xy^3}}}{_{xy^2}}\\ =\frac{{2\sqrt[6]{2xy^3}}}{\sqrt[6]{x^6y^{12}}}\\ =\frac{{2\sqrt[6]{2}}}{\sqrt[6]{x^5y^{9}}}\times\frac{2^{5/6}}{2^{5/6}}\\ =\frac{{2*2}}{\sqrt[6]{x^5y^{9}}}\times\frac{1}{(2^5)^{1/6}}\\ =\frac{{4}}{\sqrt[6]{32x^5y^{9}}}\\ \)

That is one done, now you can copy the technique and try matching up the others.

If you do not understand this one just ask and see if you can specify what line is giving you trouble :)

The formula 180(n-2) gives the number of degrees in the angles of a convex polygon because n-2 triangles can be drawn (with no lines crossing) in a polygon with n sides, each triangle containing 180 degrees. In how many ways can a convex heptagon be divided into five triangles if each different orientation is counted separately?

I am not sure I understand the question ......

Wouldn't it just be 7 ways. One way from each vertex?    Perhaps you mean something different?

All the numbers that end in 9 that is 50

All the ones that are in the tens column. That is 50 too.

So like ElectricPavolv says, that is 100.

1-100   it shows up 20 times

20 x 5 = 100 times