Yes!

It is also rational and real

Why don't you do it here with the calculation button and show me that you can?  

I'd like you to do that.  

5:x+2=4:x

I think that the question is supposed to be

5:(x+2)=4:x

$$\\\frac{5}{x+2}=\frac{4}{x} \\\\
\frac{x+2}{5}=\frac{x}{4}\qquad \mbox{I turned both sides upside down}\\\\
\frac{20(x+2)}{5}=\frac{20x}{4}\qquad \mbox{I multiplied both sides by 20}\\\\
4(x+2)=5x\qquad \mbox{}\\\\$$

You should be able to do it from here.

I used Google. Just type in the question.

I Like all of them! They are so funny!

I don't know, use the 'calculation' button and she me what you entered please.

Yeah! And that means that I will have a good future!

If you are dividing by some miniscule negative number it approaches $$-{\mathtt{\infty}}$$

If you mult by some miniscule positive number then it approaches $${\mathtt{\infty}}$$

Ah, DS.....your prior mistake has now been reversed by your correct answer, and your "future" has now been course-corrected........you return to where you were....... like it never even happened  !!!!

Sometimes, it does... Read the bible...

Relax, DS.....I doubt that  your mistake was enough to "alter" your future.....(but then again, you never know.......)

Yes. 3 is the answer. I added the negative sign...

One simple mistake can ruin your future...

As "close" as you want.....[if you take calculus, this is one of its main tenets......we can always "approach" something very, very closely !!!  ]

What do you mean? So you mean what number.... Can be divided by zero? $$\infty$$ Goes on for ever and ever.

$$\infty$$ = infinity

Have you worked it out do you thing?

No Dragon, you messed up.   :)

$$-16T^2+T^2+160 \qquad \mbox{when T=0}\\

=-16\times 0^2+0^2+160\\

=0+0+160\\

=160$$

A ratio of 5:3 means there were 8 parts of something. And 5 of the 8 parts said "yes." And 5/8ths of 240  = (5/8)*(240) = 5 * (240/8) = 5 * 30   = 150.  So, 150 people said "yes.'

K. Thank you very much!

Hava a lok at this Dragon.

It is always good to google these types of questions.

You get your answer faster and it is usually more satisfying.

Oh! I now get it! Thank you!

So the answer is 2.5 x 1 billion x 9.10900 x ((10^(-31)) kg) = 2.27725 × 10-21 kilograms

2.5 x 1 billion x 9.109 x 10^-31    kg

you just have to change 1 billion to a number berfore you start.  You can use google to help you do that Dragon.  :)

Still confused. But thanks.