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Who do you want the ok from ?      

Thanks from me, I am not use if that is what you really want.  

Are you looking for a thank you of the poster?   (We all like those but they are often not forthcoming.)

or

do you want a mathematician to confirm your answer?

$$\\2^{(7+1)} = 256\\
log_22^{(7+1)} = log_2256\\
(7+1)*log_22 = log_2256\\
7+1 = log_2256\\
7 = (log_2256)-1\\
so\\
(log_2256)-1=7$$

I didn't provide any answer but Heureka did provide a good answer  

5/100*650     million us dollars

y-(3/2)=4(x+3/4)

Is this a real question?

Will do :)

^2√31+^2√43/(17)^2

Is this what you want?

$$\sqrt{31}+\sqrt{43}/(17)^2$$

Most calcs including the Web2 calc have a $${\sqrt{{\mathtt{x}}}}$$   button.

so you just press  

 $$31\;\;\sqrt{x}\;\;+\;\;43\;\;\sqrt{x} \;\;\div\;\;17 \;\;x^2=$$

Or for the web2 calc I would write this in  the input box  

sqrt(31)+sqrt(43)/17^2 and then press equals.  This is what the output would look like

$${\sqrt{{\mathtt{31}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\sqrt{{\mathtt{43}}}}}{{{\mathtt{17}}}^{{\mathtt{2}}}}} = {\mathtt{5.590\: \!454\: \!461\: \!530\: \!028\: \!8}}$$

There are other ways as well because a square root is the same as a power of 1/2

but that is enough for now  

1 m = about 3.28 ft

So ...  (1m)(1m) = 1m^2  = (3.28 ft)^2  = about 10.7584 ft^2 

Therefore.....483.0613 x 10.7584 ft^2   will give you your answer

LOL....!!!!

a=(7-2b)^3  ...since this isn't too long, we could also expand it using the Binomial Theorem and then differentiate term by term...so we have

a = (7) - 3(7^2)*(2b) + 3(7)(2b)^2 - (2b)^3 

a = 7 - 294b + 84b^2 - 8b^3

da /db = -294 + 168b - 24b^2

After that comment Chris I think it is time for me to change my avatar.  

I do too.  Yum!

Hi Don,

Welcome to the Web2 forum   

The answers are identical

$$\\(7-2b)^2\\=((-1)*(2b-7))^2\\ = (-1)^2*(2b-7)^2\\=1(2b-7)^2\\=(2b-7)^2$$

an easier equivalent example is    

$$\\(8-3)^2=5^2=25\\
(3-8)^2=(-5)^2=25$$

Ok then Bio I might do that although I don't mind using your whole name too much.   :)

But everyone would need to know who I was talking about ( in the wrap) so you would need to sign your name "Bio" at the end of each of your posts.  😕

Well, of course, this depends upon one's frame of reference....but.....if, from your frame of reference, the b***s rolls downhill from left to right, the slope is negative, since we genarally consider a line that falls from left to right as having a negative slope.....

Of course, an observer on the other side of the hill might consider the slope 'positive"...

A ratio is just written like this: 3:5.

Thanks for those alternatives, Tetration......these kinds of things are always fun to play around with......making 6 with three "8s"  was kind of hard to figure out......!!!!

(+8) and (+4) are just normal 8 and 4 (as far as I know.)

So:

8 - 4 = ?

Here's another proof of this....assuming that "c" is the hypoteneuse and the height is drawn from the right angle to the hypoteneuse ..  so we have

(1/2) ab sin(90)  = (1/2)ch

 ab   = ch

 h  = ab / c

Alternatives:

2 * 2 + 2 = 6                         6/6 * 6 = 6

√3 * √3 + 3 = 6                     6√6 / √6 = 6

√(4 *4)+√4 = 6                     6/√6 *√6 = 6

4 * √4) - √4 = 6                    9 - (9 / √9) = 6

√√(4*4) + 4 = 6                    9 - √(√9 * √9) = 6

                                             9 - √√(9 * 9) = 6

y+3=1/2(x+4)   subtract 3 from both sides

y=1/2(x+4) - 3   simplify

y = (1/2)x + 2 - 3

y =(1/2)x - 1    

This is a line with a slope of (1/2) and a y intercept of -1

1 foot ≈ 30.5 cm 

1 foot ≈ 0.305 m

1 foot² ≈ (0.305 m)² = 0.093025m² 

We see that this fraction equals 1:

$$\frac{1foot^{2}}{0.093025m^{2}}$$

So simply multiply (*) your square meters with this fraction, to get square feet.

To get from square feet to square meters, multiply by the multiplicative inverse of the (former) fraction, that is:

$$\frac{0.093025m^{2}}{1foot^{2}}$$

If it has an annual return of 7% it increases with 0.07 times the last year's investment. That means that the total amount of money one year later is 1.07 times the original amount of money.

After one year, the total amount of money is:

10⁴ * 1,07 = 1.07 * 10⁴

After two years, the total amount of money is:

10⁴ * 1,07 * 1.07 = 10⁴ * 1,07² = ...

After three years:

10⁴ * 1,07 * 1.07 * 1.07 = 10⁴ * 1,07³ = ...

Indeed, after x years, the total amount of money, T(x), has grown to:

T(x) = 10⁴ * 1.07^x 

(X-2)^2+(Y-9)^2=16^2

The slope is the gradient.

I guess that is what you want?

I'm surprised that you don't find it easy to convert decimals into vulgar fractions.