All Answers 358384 Answers

3/4+5/8=6/8+5/8=11/8=1 3/8

Craig 1,25m swimming underwater. Matt is on the board of 2m . How far are they from each other?

I did 2--1.25= 2+-1.25= 3.25m

Is it right?

The answer is right but the working is wrong

If you want difference between two things it is is always the big one take away the little one

Above the water is positive distance form the water line. Below the watere is negative 

It is like a sideways number line with the water level set at zero.

Matt is at    +2 metres

Craid is at   -1.25 metres                     (negative numbers are always smaller than positive numbers)

so the distance between them is

(+2) - (-1.25) or just    2- - 1.25   so far what you did is perfect.

you can think of negative numbers as cold numbers becasue if the temerature is negative it is very cold.

so    - -  means take away cold air out of a room.  If you take away some oth the cold air then the room MUST get hotter.

so   - -  = +

2- - 1.25 = 2+1.25 = 3.25 metres.

Yes it is LaTex            (pronounced as Lae Tec)

and you can learn it a little at a time.

I will start you off.

say you want square root 2

the command is

\sqrt{2}        or just        \sqrt2

Open up the Latex box above.

Delete the function that is already there 

type in

\sqrt{2}

and see what you get :)

I'm not sure why there's a " - " sign stuck in between " 2+-1.25 "

but other than that, you are absolutely correct!

2 - (-1.25) = 2 + 1.25 = 3.25

= 2/7

 1 3/7 = 10/7

10/7* 1/5 = 10/35

10/35 = 2/7

Hope this helps.

= 13

1.75(-4) + 20

-7 +20

13

Here is a graph

https://www.desmos.com/calculator/vgh4o79bdw

And here is the integral

http://www.wolframalpha.com/input/?i=integral%28e%5Ex%2Fcos%28x%29%29

! In math means factorial.

When talking about integers, it means multiply all the positive integers that appear before it.

For example: 2! = 2*1

3! = 3*2*1 = 6

4! = 4*3*2*1 = 24

5! = 5*4*3*2*1 = 120

and so on.

It's used in combinatorics and probablility. It's also a way to tell how amny possible ways there are to arrange n number of objects.

I hope this helps!

That is what we like to see:polite and grateful kids!!.

You're very welcome! We're glad to be a help and we try our best! =)

(-7) + (-15) = (-22)

(-7) * 22/7 = (-22)

\(\frac{-9}{17}*2\frac{8}{13}\) = -9/17 *34/13 = -306/ 221 = -1 85/221 or 1 5/13 or 1.384615...

\(-\frac{306}{221}\) or  \(1\frac{5}{13}\) or 1.384615...

1 .6 2 -3.15 3 -75

Is there meant to be some commas in there?

What is the question?

Agree with LambLamb if you are trying to convert 30 CUBIC CENTIMETERS

However , if you are trying to find the equivalent of a cube that is 30 x 30 x 30 cm   ....some would say THIS is 30 cm cubed

then the cubic meter  volume is 30 x 30 x 30/1,000,000

27,000/1,000,000 = 27/1000 = .027 cubic meter

why is 8^1/2 2sqrt(2) and not 4?

Firstly this has NOTHING to do with complex numbers.  That has a specific meaning in maths.

secondly your consusion is very common and it is good if you can get it sorted out now.

^ means to the power of    3^4 means   3⁴ = 3*3*3*3        = 81

* means to multiply            3*4 means   3 x 4 =3+3+3+3   = 12

         \( 8^{1/2}\;\ne\;8\times \frac{1}{2}\\ ~~\\ 8^{1/2}=\sqrt{8}=\sqrt{4\times2}=\sqrt4\times \sqrt2=2\times \sqrt2 = 2\sqrt2\\ and\\ 8\times \frac{1}{2}=\frac{8}{2}=4 \)

This is a really important thing for you to get stuck into your brain  

30 cm³ = 0.00003m³

The conversion of cm to meters is 100:1.

But that's cubed, see.

So the ratio of cm³ to cubic meters is 100³:1, or 1,000,000:1

Take 30 cm³, divide it by the conversion factor for m³, and voila.

30cm³ /1,000,000 = 0.00003 m³

8 * 1/2 does not mean the same thing as \({8}^{1/2}\)

An exponent of 1/2 is the same as taking the square root. And the square root of 8 is \(2\sqrt{2}\).

Well, multiply 45 by 60.

\({81}^{1}\)

\({3}^{4}\)

and

\({9}^{2}\)

Of course, all of these use only integers.

There are infinitely many other combinations of (rational and) irrational bases and exponents that equal 81.

6e^12.77(.04)

Well if you type

6*e^12.77*(.04)         into the input line you will get

\(6\times e^{12.77}\times 0.04\)

and that is what you asked for :)

The calculator on this website will tell you much more quickly than I can!

But if you'd like to learn how to do it, then here it goes:

When dividing a fraction, you are actually multiplying by the reciprocal. (A reciprocal is a "flipped" fraction, example, reciprocal of 44/90 is 90/44)

Instead of 3/4 ÷ 4/5, you would be doing 3/4 * 5/4. 

When multiplying fractions, multiply the top numbers together and multiply the bottom numbers together.

3/4 * 5/4 = 15/16, or 0.9375

Hope this helps!

osksldibgjhkrzgt,jhrgtyemagg

To prove a number is irrational, you could assume that it can represented by a ratio of integers and then prove that would be a contradiction if that were to happen.

For example with \(\sqrt{2}\), you could assume it can be represented by a ratio of integers, but if you tried to do that, you'd find that one of the integers would have to be both odd and even at the same time, which is a contradiction, proving \(\sqrt{2}\) is irrational.

All square roots of non perfect squares are irrational by a version of this proof.

All an irrational number is is a number which cannot be represented as a ratio of integers and has no repeating patterns in its infinitely continuing decimal expansion.

There's probably more on this topic, but I can't really go any deeper right now.

Je parle francais! J'en sais pas! Desolee!