All Answers 358514 Answers

Good,

Lets try question 16

easterly force = 3N

Northerly force =4N

Use Pythagoras's theorem to get net force.

sqrt(9+16)=5N

Now,  F=ma

5=2*a

$$acceleration =5/2=2.5m/s^2$$

Wed 27/8/14

* 1) I thought this quadratic equation was just a little different from usual

@@ End of Day Wrap :     Tues 26/8/14        Sydney, Australia          Time 10:35pm          ♬

Hi everyone,

School is definitely on in the US.  The forum has already become much busier.  It is a very good thing that so many of you are dedicated to answering questions and to helping other students learn.  Today our answerers are TakahiroMaedo, Aliammar, Alan, Kitty<3, CPhill, AfroThundr3007730, AzizHusain, DragonSlayer554 and GoldenLeaf.   A very big thank you to each of you. 

Aliammar and AfroThundr3007730 have only just joined up.  We welcome you andhope that you enjoy the time you spend with us.  

Please keep in mind that it is impossible for me to properly look at every question and answer.  I rely on you to let me know of any particularly good or interesting posts.

Anyway, here are a few interest threads for the day:

*1) Ninja has been writing a lot of very good posts pertaining to using the web2 calculator.  I think that these need to be kept.  They are very good.   this is an example of 1

Question 5 is right.  

Question 11   There may be a 'normal' method for doing this, I am not a physics specialist.

$$magnitude\\
=\sqrt{7.6^2+5.2^2}\\
=9.20869\\
=9.2$$

$$\\tan\theta=\frac{5.2}{7.6}$$

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{tan}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{5.2}}}{{\mathtt{7.6}}}}\right)} = {\mathtt{34.380\: \!344\: \!723\: \!845^{\circ}}}$$

direction = 180+34.38 = 214.38 degrees

So the answer is B      9.2 and 214.38 degrees with the positive x axis.

If you do not understand what I have done then make sure you ask me to explain more.  

the length still bositive any way the direction is nigative or not 

the answer
length = + 5
time = +2
v= 5/2 = + 2.5

How about

$$\frac{1}{3}=\frac{3(8-7)(6-5)(4-2-1)}{9}$$

$${{\mathtt{x}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{8}}$$

Ninja you should include all these calculator instrutions in one of your threads! Are you already doing that?

They are really good 

$$\\(x+2)(x+1)-2(x+5)\\
=x(x+1)+2(x+1)-2(x+5)\\
=x^2+x+2x+2-2x-10\\
=x^2+x-8\\$$

While you are at it, add a Troll category. There is at least one, very funny, professional classed, troll on here. :)

$$\begin{array}{rlll}
2x-5y&=&3\; &(1)\\\\\\
\frac{-2}{5}x + y &=& \frac{3}{10}\qquad &(2a)\\\\
5(\frac{-2}{5}x + y) &=&5( \frac{3}{10})\qquad\\\\
-2x + 5y &=&1.5\qquad &(2b)\\\\
2x - 5y &=&-1.5\qquad &(2c)\\\\
\end{array}$$

It now becomes clear that the 2 equations are parallel lines hence there is no simultaneous solution!

I shouold have recognised this from the beginning but better late than never!

-20+18

and that is it

0.052, 0.25, 2/5, 0.52, 2.05

mult by 2 then add the zeros.

$${\frac{{\mathtt{3\,043}}}{{\mathtt{897\,960}}}} = {\mathtt{0.003\: \!388\: \!792\: \!373\: \!825\: \!1}}$$

I just put it straight on the web2 calc.

$${\mathtt{\,-\,}}{\mathtt{6}}{\mathtt{\,\times\,}}{{\mathtt{3}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{2}}}^{\left({\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right)}{\mathtt{\,-\,}}{\mathtt{8}} = -{\mathtt{60.740\: \!078\: \!950\: \!105\: \!126\: \!8}}$$

1/3,  3/6,  2/3,  5/6, 5/3

$${\mathtt{4.4}}{\mathtt{\,\times\,}}{\mathtt{104.4}}{\mathtt{\,\times\,}}{\mathtt{10}} = {\mathtt{4\,593.6}}$$

There are many ways to do so. I simply get the number and mutiply it with the percentage in decimal. For Example: 1 is 100%, 0.4 is 40% ect.

if you were to find 40 percent of 500 you would do this:

$${\mathtt{500}}{\mathtt{\,\times\,}}{\mathtt{0.4}} = {\mathtt{200}}$$

40% of 500 would be 200

Um... If I understand correctly, to make any mathematical expression with the number 3 in it?

$$x+3$$

If you are asking 81.11 Plus 15% of 84.11, this is how you answer it.

First you need to know what 15% of 84.11 is. To do this, you need to just do a simple equation. We mutiply the Number by the percentage in a decimal form. 1 meaning 100%. So 15% would be 0.15.

Now we do the mutiplication.

$${\mathtt{84.11}}{\mathtt{\,\times\,}}{\mathtt{0.15}} = {\mathtt{12.616\: \!5}}$$

15% of 84.11 is 12.6165

How we add them together.

$${\mathtt{84.11}}{\mathtt{\,\small\textbf+\,}}{\mathtt{12.616\: \!5}} = {\mathtt{96.726\: \!5}}$$

That is the answer

Asked by Questioner.

Answered him. You can close this one.

A googol is 10^100

A googolplex is 10^googol

I've never heard of a googolplexian!