All Answers 358149 Answers

$$1\ dozen = 12$$

$$1/2 \ dozen = 6$$

dozen(apples)

12(3x+6)

36x+72

1/2dozen(oranges)

6(4x-5)

24x-30

dozen apples + 1/2dozen oranges

(36x+72) + (24x-30)

(36x+24x) + (72-30)

60x + 42

So our answer is 60x + 42 pesos.

If we knew the value of x, we could find the exact cost. We don't though, so this is our final answer.

Melody the reason i gave you was just an example of someother reasons!so is there any other formula we can use to find out using other reasons !

Hey Melody,

The paint.net paint program I used for the number line was really just to edit the number line, (add the points) so I probably won't add it to the Development page.

I looked at the GeoGebra software that you used for your paint program and that looks like something that could be added to the development page. It looks a little more relavent to math.

I'll add that one instead if that's alright with you.

Okay rosala,

Opposite angles in a parallelogram are equal so the opposite angle is 55 degrees

Now the angle sum of any quadrilateral (4sides) is 360 degrees so

55+55+x+x = 360       (the four angles add up to 360degrees and opposite angles are equal)

110+2x=360

2x=250

x=125

so the angles are 125, 125, 55, and 55 degrees.    

Well, if you really mean this, then each component would be 100*cos(30°) newtons.  However, you would normally resolve a force into two directions that were perpendicular to each other, in which case one component would be 100*cos(30°) newtons and the other would be 100*sin(30°) newtons.

Here's an approach using the constant acceleration kinetics equations:

@@ End of Day Wrap : Sun-Mon 7/7/14   Sydney, Australia   Time 11:15am     ♬                   

Hi everybody,

Lots of great answers today from reinout-g, Cphill, Rosala, Kitty<3, Pokemonfan58, Snip35, NinjaDevo, Bertie, Quazars, Alan, Admin and Zegroes.  Thank you all.   

Quazars is new.  Welcome to web2.0calc forum.  We hope you learn a lot and enjoy yourself here.

Andre Massow (owner and developer of web2.0calc.com) has added a dropdown list to our Conversations in our message centre.  Now only the top 10 show.  For me this is great.  Before I felt like i had to scroll through every member of the whole forum before I could get to where I needed to be.  This should be much better.  Thank you Andre!  Rosala said in her poem that you are the most important one because without you we would have not forum at all.  Thank you for everything you do for us.

Chris asked Ninja how he drew his number lines.  This was Ninja's recommendation.

I really must take a look.  Maybe you could put it into your 'development' thread somewhere Ninja?   

i knew that melody about what you were referring to ! its just that i couldnt say or mistakenly didnt say it to Zegroes in proper words but still girls of my age or aroung or smaller than my age dont call the other girls beautiful,whether its inner beauty or outer beauty,and you know why (becoz they just like to call themselves beautiful!) !

i am happy you liked my poem , actually i was a little nervous about writing it and showing to you all becoz i thought what if no one likes it!but i'm happy you liked it!

thank you very much !And a thumbs with 5 points  from me for your beautiful words!

Of course you feed free points TO MY RIVAL!

Good work Ninja, but, how do you know that this person is from the US.?

Really anonymous, this is an international forum, you need to be much more precise.

And, it really could be under the bed!

Mathematically, the meaning of life is 42.

hi Rosala,

Yes, I am totally different from Zegroes!    

Who has been giving you all the plus one points on the forum.

I don't think that you would do that yourself so you must have an admirer!  

Could be Zegroes but considering that you are competition I have my doubts.  Maybe you have another admirer.  Who do you think it could be?     

-----------------------------------------------------

NOW Before I write a wrap I look at every question to that point.  Some have not been answered, sometimes points have not been given, sometimes I want to add another answer.  It takes quite a bit of time.  Obviously it takes more time when the forum is busy and then I have to do it every night or I would never catch up!

I know when I have checked every answer because there is no blue showing in the answer pages.  I go over all the pages and check that nothing is blue.

Then I go through all the questions and collect all the answers names.  If I don't recognise an answerer I click into their profile and find out if they are new.

During the day, as I answer the questions I have a second page open, it is invisable to you, i copy all the interesting threads across as I go so the list is already compiled when I write the wrap.

I also make little notes during the day if I want to mention anything.

Writing the actual wrap usually doesn't take that long - maybe 15 minutes I am not sure.  But If i do a big one it can take well over an hour.  It is more the lead up that can take a long time, it often takes hours of concerted effort.

I have only been doing one ever second day for the last little while because the forum is rather slow and it really doesn't need to be done more often than that.  It's been good it has been giving me more time to struggle with my own interesting questions.  (Not to mention, more time to run the rest of my life)  I like this degree of busy!

When the US students all finish their holidays I expect it will get very busy again.  I will probably have to work out a new way of doing things.  Just before the US broke up I was starting to not cope.  I think Chris felt overwhelmed as well.  I will probably have to learn to do things less thoroughly and that goes against my whole nature!

Anyway, does that answer your question?  

I'm assuming you mean sales tax in the U.S.

The funny thing is, sales tax varies between 1-10% of the dolar in the different states of the U.S.

The government gets their money somehow though! If it isn't through sales tax it's through property tax, income tax, etc.

Here's a chart showing how it differs from state to state, but it all adds up to about the same amount!

To find the sales tax for your state, (again this is assuming you live in the U.S., you could live outside the U.S.) I would just google "[state] sales tax." 

Once you have this percent, change it to a decimal. If you got 5%, the decimal would be .05, if you had 7%, the decimal would be .07, etc.

Now multiply this percent by however much the cost of a certain product is, and it will give you the tax on that product!

Im too scared to look under my bed.........Theres so many dark dark things down there.i havent cleaned it out in years plus if something would go under my bed it would never be seen again.but usually you just check the places that youd never think to find it and boom its there.why does it work that way?

Hi Melody

Your second category, two letters the same, covers the possibility that two letters are the same and that the other two letters are different and different from each other. In other words, it doesn't allow for the possibility that your four letters consist of just two letters forming two pairs. This produces another 1950 combinations. You have to be quite careful as to how you calculate this, it is potentially confusing and it's very easy to overcount.

Maybe it is under the bed.  I often find things under the bed!

Zegroes, where do you find things?

Yes you have an odd number of brackets so fix that up and then we can tell you what the answer is.

Or you could just put it into the site calc and get the answer for yourself!

Initially       $$t=0$$

$$\\\ddot{x}=0 \quad \dot{x}=23cos35^0 \quad x=0\\\\
\ddot{y}=-9.8 \quad \dot{y}=23sin35^0 \quad y=0\\\\$$

------------------------------------------------------------------

Ongoing

Find y when x=30

When x=30

30=(23cos35)t

t=30/(23cos35)

t=1.592314681

$${\mathtt{\,-\,}}{\mathtt{4.9}}{\mathtt{\,\times\,}}{{\mathtt{1.592\: \!314\: \!681}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{23}}{\mathtt{\,\times\,}}\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}{\left({\mathtt{35}}^\circ\right)}{\mathtt{\,\times\,}}{\mathtt{1.592\: \!314\: \!681}} = {\mathtt{8.582\: \!442\: \!534\: \!071\: \!419\: \!9}}$$

The ball will hit the wall 8.58 metres above the floor.

Its 5 i think the mistake here was the unessassary parenthisis before it said /2

is there anywhere you can insert a page number at the top?

Let's do this 2 different ways

(1)  You have 100gm in a 1000ml so you must have 10gm in 100ml

So if you take 100ml of the strong solution it will contain 10mg.  So you just need to add 900ml of the solvent (probably water)

then you will have 10mg in 1 litre which is what you want.

(2) There is a nursing 'formula' for this it says

The amount of strong soln needed = $$\begin{array}{rll}
\mbox{the amount of strong solution needed}&=&\frac{\mbox{concentration required}}{\mbox{concentration available}}\times \mbox{ total quantity required}\\\\
&=&\frac{10g/L}{100g/L}\times 1000mL\\\\
&=&\frac{1}{10}\times 1000mL\\\\
&=&100ml \qquad \mbox{of strong solution is needed}\\\\
\end{array}

\mbox{The rest is solvent}\\\\
1000mL-100mL=900mL\; of\; solvent\;is\;also\;added\; (Water)$$

I need a more specific explanation please Bertie.