All Answers

+118741

Gloria:
4.46 x 10^-6

Hello Gloria,
You know, it is much nicer if you ask a question in a sentence with a please (or equivalent) attached!

Now, since the power (exponent) is negative, that means that this is a very little number.
The 6 means that you have have to jump the decimal point over 6 digits to get it to where it belongs. Actually draw the jumps in with your pencil
So, you have to move the decimal point over 6 places in the direction that will make 4.46 smaller.
If there are no digits to jump over just add in zeros.
Let's see if you can't do it now.
Why don't you post the answer and i can check if it is correct.
You could say thank you at the same time.

MelodyFeb 2, 2014

+118741

Ann:
I need to calculate ratio analysis to forecast staffing. Help

I don't know, the question is too vague for me to be able to help you.
Sorry.

MelodyFeb 2, 2014

+118741

Anon2121:
n^2-8n-49=-5

First I want you to learn to use the 'sup' button that is located above the smilies.
If you want to enter n^2 you do it like this
n now press the 'sup' button. The curser will be placed where you need to enter the 2. Now just move the curser to the end and keep going.

so your question is

n ²-8n-49 = -5
Whenever there is a squared term, you have to take it all over to the same side. (with 0 on the other side) You need to add 5 to both sides.

n ²-8n-44 = 0

Now, I don't think that this factors out nicely so it is probably best to use the quadratic formula.
If you dont know it, go to this web page and play the video. It is cool. I like it.
just copy and paste it into your browser.

http://www.youtube.com/watch?v=O8ezDEk3qCg

Can you do it from there?

MelodyFeb 2, 2014

+118741

luigi.colarullo47:
[left]:lol:[/left]radfice quadrata di 4

Hi again luigi,
You have to be very careful with your spelling or I'll never make any sense of your questions.
I guess you already worked that out for yourself.

Ciao di nuovo Luigi
Bisogna essere molto attenti con l'ortografia o non farò mai più alcun senso delle vostre domande.
Credo che tu già lavorato che per te stesso.

MelodyFeb 2, 2014

+118741

luigi.colarullo47:
radice quadrata di 144

MelodyFeb 2, 2014

+118741

Guest:
what is the average unit of sale. serves 2100 in meals to 115 customers

Hi Guest,
I think that you are being asked what is the average number of meals per cusomers.
-----------------------------------------------------------
I just want to talk about non-related things first.
now three people get these marks in a test 4, 7, and 2
Then the average mark is the total of all the marks divided by how many marks there were. That is (4+7+2)/3
------------------------------------------------------------

Now in your question you have already got the total number of meals, that was already added for you.
And you have got the number of customers.
So can you work out the average number of meals per cusomer by yourself now?

MelodyFeb 2, 2014

Feb 1, 2014

+118741

What ever happened to please?

MelodyFeb 1, 2014

+6252

could you repost your question? I don't think it came through right.

RomFeb 1, 2014

+6252

Quote:
34 1/2 inches minus 33 7/8 inches

There's a couple ways you can do this.

1) you can convert the whole thing to 1/8's of an inch.

34 1/2 inches = 8x34 + 8x(1/2) = 276 (1/8 inches)

33 7/8 inches = 8x33 + 7 = 271 (1/8 inches)

so 34 1/2 - 33 7/8 inches = 276 - 271 (1/8 inches) = 5 (1/8 inches) = 5/8 inch

2) you can notice that 7/8 > 1/2 so you need to borrow a 1 from the 34.

then you have 34 1/2 inches - 33 7/8 inches = 33 + 1 1/2 inches - 33 7/8 inches = 1 1/2 - 7/8 inches

now you convert the 1 1/2 to 1/8ths to get

1 1/2 - 7/8 inches = 12/8 - 7/8 inches = 5/8 inches

RomFeb 1, 2014

+135

Try this in Desmos: (16 (sin t)^3, 13 cos t - 5 cos 2t - 2 cos 3t - cos 4t).
You'll have to extend the domain of t a bit...
Hmm, I guess I'm a couple of weeks early.

I like SerenaFeb 1, 2014

+118741

gringo:
how to work out improper fractions

Hi Gringo,

Copy and paste this web address into the browser at the top of the page and press enter.

http://www.mathsisfun.com/improper-fractions.html

Work your way through it. i think it will help.

MelodyFeb 1, 2014

+118741

woods:
(t-4)^4

MelodyFeb 1, 2014

+118741

Thanks i like Serena
I'll do that.

MelodyFeb 1, 2014

#24

+118741

+14

Another week is finished. Sat for me but Friday for most of you i think.
We had some great answers today from Rom, I like Serena and Selina Marie. Thanks guys.
Thanks for giving the young people a chance to answer today. It is a pity that only Selina took advantage, but it is Friday. Not many people want to do homework (even other people's on a Friday).
Thanks Selina Marie for that great answer. You gave a great one yesterday too. Why don't you join up properly and become a part of the team? That would be really good.
Have a really great weekend,
Melody.

Reinout-g i have left messages at the end of your calc display posts, specially for you, oh, also on your puzzle post.

MelodyFeb 1, 2014

+118741

bump
I really would like to look at this one .

MelodyFeb 1, 2014

#66

+118741

HARD ONE
2 2 5 7 17 20 and the magic number is 1994

Maybe we could have a little hint ? Please Reinout-g

MelodyFeb 1, 2014

+118741

MelodyFeb 1, 2014

+118741

MelodyFeb 1, 2014

+118741

bump

MelodyFeb 1, 2014

+118741

james467675:
how to Find Measures of Coterminal Angles

Hi James,
Try watching this video.

http://www.youtube.com/watch?v=dz5YpNFuhRQ

MelodyFeb 1, 2014

+118741

nain:
[/sup]how we solve this question:
2+2*2%2/2-2

Hi nain,
I think that you have tried to use the sup button like I am asking everyone to. Thanks for that.
But it has got messed up and I don't understand what your question is.
Sorry.

MelodyFeb 1, 2014

+118741

BaileyBoo:
What are all the perfect squares?

perfect square are numbers like 1 ², 2 ², 3 ²,...........

= 1,4,9,16,25,......
Every number has a square number that goes with it
There is an infinite number of numbers, therefore
there is an infinite number of square numbers
So i can't write them all for you because that would take an infinite amount of time.

MelodyFeb 1, 2014

+118741

111:
-2 (3-5)² -2 (-3)

Why is this causing you a problem?

There is an invisible times sign between the number and the ( bracket.

or, is it that you don't understand how to work with negative numbers?
We did a post earlier today on this, have a look at what we wrote.
There are 3 answers, you can use the one you like best.

http://web2.0calc.com/questions/negative-and-positive

After that have a go at your question. If you get in a mess, post what you have done and we will sort it out together.
There are some questions at the end of the other post. You may even like to copy and paste them into your reply and answer them for me.
That would be cool.

MelodyFeb 1, 2014

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