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$\pi^3$   ≈   31.01

i think i would

Post your questions......somone on here can probably help.....

You are not a bother, you just have not learned some of this stuff yet :)

Here is Wolfram alpha's answer. I think it is the same:

12, 281, 054   rounds to  12,300,000 to the nearest hundred thousand

Scientific notation  =   1.23  x 10⁷

They don't they are the same.

(2x-3)^4

The 4 line of pascals triangle is  14641

so

$(2x-3)^4\\=1*(2x)^4+4*(2x)^3*(-3)^1+6*(2x)^2*(-3)^2+4*(2x)^1*(-3)^3+1*(-3)^4\\ =1*16x^4+4*8x^3*-3+6*4x^2*9+4*2x^1*-27+1*81\\~\\ =1*16x^4+4*-24x^3\;\;+\;\;6*36x^2\;\;+\;\;4*-54x\;\;+\;\;1*81\\~\\ =16x^4-96x^3+216x^2-216x+81$

There could be careless errors but this should be the same as if you expand it in any other way.

Ok thanks! 

Thank you so much CPhill!!! I had no idea how to solve that, THANKS!!!

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oh sorry did i say meth?

I meant meat, sorry speel check.

THATS A DRUG don't do drugs and stay in school kids

did you meen math?

dw you'll feel better with sum meth :)

Isn't this a Chemistry question ????

If so....see if this helps....

https://www.thoughtco.com/octet-rule-explanation-in-chemistry-606457

C (23, 4)  =      23! / [ (23 - 4)! * 4! ]   =  23! / [ 19! * 4! ]

C(23,5)  =   23! / [ (23 - 5)! * 5! ]  =  23! / { 18! * 5!]

So.......we want to solve this

23! / [ 19! * 4! ]  + 23! / [ 18! * 5!]  =  24! / [ (24 - k)! * k! ]

1 / [ 19! * 24] + 1 / [ 18! * 120 ]  =  24 / [ (24 - k)! * k! ]

[ 5   + 19 ]  / [ 19! * 5!]  =  24 / [ (24 - k)! * k! ]

Which implies that

19! * 5!   =   (24 - k)! * k!

Which implies that    k  = 5

But  C (24, 5)  =  C(24, 19)

So...... 5 + 19  =  24

See hectictar's answer in your other post.....

We need to find the second derivative here

y'  =  3x^2  +  2ax

y" =  6x +  2a       and an inflection point will occur when this = 0

Set this to  0

6x + 2a =  0

3x + a  = 0

3x  =  -a    ⇒    a  = -3x    and when x = 2 we have that  -3(2)  = -6 =  a

So....putting this into the original function to find b, we have that

y  = x^3  + (-6)x^2 + bx  +3

And  we have that at  x = 2, y  = -1....so.....

-1  =  (2)^3 - 6(2)^2 + b(2) + 3

-1 = 8 - 24 + 3 + 2b

-1  = -13 + 2b

12  = 2b   ⇒  b =  6

So the function  is

y  = x^3 -6x^2 + 6x + 3

Here's the graph with the inflection point :

https://www.desmos.com/calculator/6ls40gwylq

Is this the right expresion?

$\frac{y^2+2y}{x^2+2xy+y^2}\div\frac{y^2-4}{x+y}$

First let's factor the numerators and denominators.

$=\,\frac{y(y+2)}{x^2+xy +xy+y^2}\div \frac{(y+2)(y-2)}{x+y} \\~\\ =\,\frac{y(y+2)}{x(x+y) +y(x+y)}\div \frac{(y+2)(y-2)}{x+y} \\~\\ =\,\frac{y(y+2)}{(x+y)(x+y)}\div \frac{(y+2)(y-2)}{x+y}$

Now Invert the second fraction and change to multiplication.

$=\,\frac{y(y+2)}{(x+y)(x+y)}\cdot \frac{x+y}{(y+2)(y-2)} \\~\\ =\,\frac{y(y+2)(x+y)}{(x+y)(x+y)(y+2)(y-2)}$

Now reduce the fraction as much as possible.

$=\,\frac{y}{(x+y)(y-2)}$

y  =  x³ + ax² + bx + 3

We know that when  x = 2  , y''  =  0 .

y'  =  3x² + 2ax + b

y''  =  6x + 2a                So....

0  =  6(2) + 2a

a  =  -6

Since the graph passes through  (2, -1) , we know...

-1  =  2³ + (-6)(2)² + b(2) + 3

-1  =  8 - 24 + 2b + 3

12  =  2b

b  =  6

We can solve this for  A

10  =  radius * 3.14  * ( A / 180)

10  =  15 * 3.14  *  (A / 180)     multiply both sides by 180

1800  =  15* 3.14  * A      divide both sides by  15* 3.14

1800 / [ 15 * 3.14 ]  =  A  ≈  38.22°

S  = 

radius  * 3.14 *  ( Angle measure / 180)  = 

20  * 3.14  (  15 / 180)  =

62.8 / 12   = 5.23 in

-9pi/8

23pi/8

-25pi/8

There is supposed to be an integer.