All Answers 358087 Answers

The volume of the tank is given by

V = (4/3)pi(r³)   where r is the radius

So we have

V = (4/3)pi(7.7m)³  =  about 1912.320958 m³

And 1 m³ = 1000L

So  1912.320958 x 1000 = about 1,912,321 L

This might be asking for the escape velocity of the Moon relative to that of Earth.  If so, escape velocity is given by

$$v_e=\sqrt{\frac{2GM}{r}}$$

where G = Newtonian gravitaional constant

M is mass

r is radius

So    $$\frac{v_{eMoon}}{v_{eEarth}}=\sqrt{\frac{M_{Moon}r_{Earth}}{M_{Earth}r_{Moon}}}$$

or     $$\frac{v_{eMoon}}{v_{eEarth}}=\sqrt{\frac{3.7}{81}}=0.2137$$

.

LOL!!!!

Fat is important. It's part of the food pyramid.

Eating:

Only if they have no fat, sugar, or bacteria (bad ones). Too bad most cookies have fat.

Computer:

Depends on who you are.

@@ End of Day Wrap         Fri 17/10/14         Sydney, Australia        Time 6:10pm     ♬

Hi all,

It is the end of the week for me.  That is a very good thing.  The forum is a bit quieter on the weekends.   

Today our wonderful answerers included Heureka, Alan, CPhill, Geno3141, Quinn LancelotLink and Stormegetton.  Thanks all.  

Now for a few interest posts:

1) Demo of the distributive law.       Thanks  Alan and Melody

Sat 18/10/14

1) A lovely visit from NinjaDevo and GoldenLeaf.   

I believe these points are meant to be rotated around the origin....

1. For the first one....C is at (2,2)......rotating a point in the first quadrant 90 degrees clockwise reverses the coordinates and changes the sign on the original x coordinate.....so....(2, 2) becomes (2, -2)......

2. Rotating a point in the second quadrant 90 degrees clockwise reverses the coordinates and changes the sign on the original x coordinate . So, B= (-1,4) and B' = (4, 1)

3. Here, we're just doing the opposite of what we did in (2). E = (3, 2), so E' = (-2, 3)

4. Rotating a point in the second quadrant 90 degrees counter-clockwise reverses the coordinates and changes the sign on the  original y coordinate. So B = (-1, 4) and B' = (-4, -1).

$$\\a^5\times a^7 = a^{5+7}=a^{12}\\\\
a^{12}\div a^3=a^9$$

18-3.8x=7.36-1.9x

$$\small{\text{
$
\begin{array}{rcll}
18 - 3.8x &=& 7.36-1.9x \\
7.36-1.9x &=& 18-3.8x & \quad | \quad +3.8x\\
3.8x -1.9x +7.36 &=& 18\\
1.9x +7.36&=& 18 & \quad | \quad -7.36\\
1.9x &=& 18-7.36 \\
1.9x &=& 10.64 & \quad | \quad :1.9\\\\
x &=& \frac{10.64}{1.9}\\\\
x &=& 5.6 \\\\
\end{array}
$ \\
}}$$

$$\boxed{x = 5.6}$$

just enter it on the home page calc as

[2nd] atan (2/18)

the radian / degrees button is in the bottom left corner.

-16 -(6x-4)=6   add 16 to both sides

-(6x - 4) = 22    distribute the negative across the terms in the parentheses

-6x + 4 = 22      subtract 4 from both sides

-6x = 18           divide both sides by -6

x = -3

If you want the remainder when 50 is divided by 6 youcan put it into the web2.0calc like this.  

mod(50,6)

$${\mathtt{50}} \,{mod}\, {\mathtt{6}} = {\mathtt{2}}$$

Thanks Chris,

I didn't lok at them very hard but the first one looked like it might be quite good.

Maybe you're just dyslexic.........

10/18=?/100       cross-multiply

10 x 100 = 18 x ?     divide both sides by 18

10 x 100 / 18 = ? = about 55.55

Thanks for those resources, Melody....this is something that is easier shown rather than just explained  !!!!

$$$I always start with $\\\\
\begin{array}{rll}
gradient&=&gradient\\\\
\frac{y-y_1}{x-x_1}&=&\frac{y_2-y_1}{x_2-x_1}\\
\end{array}$$

Take a look at this. 

Here's a graph representing geno's set up..........The station is located at B....BC is the distance the plane is from the station intially and AC is the height of the plane aboive rhe station.

Here are 2 resources that you might find very good.

3/11=9/33

so

9:12

3:4

When you are adding an subtracting with letters, you can think of the letters as things.

2 rabbits+3 rabbits = 5 rabbits

so

2r+3r=5r

OR

$$\begin{array}{rll}
g(x)&=&2^{-x}\\
log_2[g(x)]&=&log_2\;2^{-x}\\
x&=&-log_2[g(x)]




\end{array}$$