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Hi,

Yes, we are real people and if you are lucky you will get a real answer.

BUT 

You have to ask a real question first :))

\(\displaystyle\lim_{x\rightarrow ??} \frac{ \frac{1}{(x+4)}-\frac{1}{4} }{ x}\)

OK Is this what you want and what does x approach ???

\(\sqrt{3v^7w}\sqrt{15v^6w^2}\\ =\sqrt{3v^7w*15v^6w^2}\\ =\sqrt{45v^{13}w^3}\\ =\sqrt{9*5v^{13}w^3}\\ =3\sqrt{5v^{13}w^3}\\\)

That is probably the simplest answer.  :/

Hi guest,

If you ask a question you should specify that an answer alone is of little value because you want to learn.

If someone gives an inadequate answer then you need to say "thankyou but I need more explanation please."

You can continue pushing for a better explanation until you really understand.

You must do this all on the original question thread.

If you do not get a satisfactory answer after a couple of 'pushes' then you can send a private message to a member that you believe can help you.

You will need to include the address of you question as they can be difficult to find.

In order to message people privately you will need to become a member.

We want members who really show that they want to learn so you would be made very welcome :))

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21????

There are four choices for the first digit (3, 5, 7, 9) and each of the choices can be followed by the other 6 digits in any order.

This will give 4 x 6! ways, or 4 x 6 x 5 x 4 x 3 x 2 x 1 ways.

You need to choose 2 of the 13 diamonds, in any order:  ₁₃C₂ = 78.

You need to choose 3 of the 13 spades, in any order:  ₁₃C₃ = 286.

The answer will be the product of these two numbers:  

Deez nuts

-f(x) is a reflection of f(x) with respect to the x axis.

If you're in a drawing program and you have some shape and you select it and "flip vertical" this is the same sort of reflection that -f(x) does to f(x).

what is negative 1/8 minus 7 and 7/8,

-1/8 -  7 7/8

-1/8 - 63/8

-64/8=-8

= -8

\(4^x - 4^{-x} \\ \mbox{I'm not sure what sort of answer you are looking for here. We can do this..} \\ 4^x = e^{\ln(4) x} \mbox{ and } 4^{-x} = e^{-\ln(4)x} \mbox{ so we have }\\ 4^x - 4^{-x} = e^{\ln(4) x} - e^{-\ln(4)x} = \\ 2\sinh(\ln(4)x)\)

ba-ba-ba---ba-ba-nana   ba-ba-ba---ba-ba-nanaba-na-na, po-ta-toe steeeeeewwww, bababababababababababababa, ba-ba-nana

3.75

7.75

Negative 8

-1/2+-2/3=-3/6+-4/6=-7/6=1.16(line over the 6)

its like Pythagoras theorem but it is a bit different it is to find an unknown side of a triangle

a number other than 0

i think i understand, but 5/8 is 5 divided by 8, not 8 divided by 5

5/6 = 0.83333333333333333.375-5/6 = 2.5416666666666667=3 13/24

BANANNA POTATO YEAHHH

i know 5/8 = .625, but how do u prove it? look-

5/8=5%8

how many 5s in 8? 1. but it doesn't fit!!!

YES maths is often confusing.  That is why it is so rewarding when you finally figure things out :))

\(5/8\;means\;5\div8\;\;\;NOT\;\;\;8\div5\)

Set it up like any other division

     0.  6  2 5

8 | 5.⁵0²0⁴0

8 goes into 5 zero times with 5 left over.  Line up the points and carry the 5

8 goes into 50      6 times with 2 left over

8 goes into 20      2 times with 4 left over

8 goes into 40      5 times with 0 left over

so        5 divided by 8 is   0.625                           (There should be a line under the 0.625)