All Answers 358180 Answers

I like that Alan,

A head measured in feet.   Gets the imagination going that does. 

Thanks Alan,

So is there always  6x10^23 atoms in a mole (of anything) ?

Can you (or someone else) tell us a little about the significance of Avogadro's number? (Only if  is relatively easy to do.  )

Sasini, you have answered well but I do not think that you were intended to factorize it.

You really should state that that is what you have done.   ;)

7.7 km = 7700m 19 km = 19000m 11km = 11000m

if that is what you are asking ?

2/100 = x/30000

Cross multiply

100x = 60000

Divide by 100 on both sides

x = 600

Anonymous is correct but just didn't explain why :)

3/5 ÷ 7

Turn 7 into a fraction

3/5 ÷ 7/1

Use the recipricle and multiply

3/5 x 1/7

Multiply across

3/35

And that's it! :)

P.S labby is correct, but you usually stop if you can't simplify it any more

Assuming it's an  isosceles trapezoid (base angles  are equal), we have

A  = (1/2)h (b1 + b2)    where h is the height b1 is one of the bases and b2 is the other base

We want to get x by itself.......so we have

y = (x + 1) / (x - 3)   multiply both sides by x -3

y(x - 3)  = x + 1       simplify

yx - 3y = x + 1

yx - x = 1 + 3y

x(y - 1) = 1 + 3y

x =  (1 + 3y) / (y - 1)     "exchange" x and y

y = (1 + 3x) / (x - 1)   for "y," write f^-1(x)

f^-1(x) = (1 + 3x) / (x - 1)

Here's the graph of f(x) and f^-1(x).....

x=8^(-x-1)*((8^x)+1)

We can write

y=(5/3)cos[4(x-pi/4)]+4

This is the cosine graph with an amplitude of (5/3) shifted up 4 units

There are 4 periods in 2pi

The phase shift is pi/4 units to the right........

Pi (shortened version of "pie") can come in many flavors. Such flavors include cherry, apple and pumpkin.

By playing "Game of the Year: 420 BLAZE IT" by Andy Sum.

$${\frac{{\mathtt{2}}}{{\mathtt{6}}}} = {\frac{{\mathtt{1}}}{{\mathtt{3}}}} = {\mathtt{0.333\: \!333\: \!333\: \!333\: \!333\: \!3}}$$ = .33

nei (not enough information)

Take the cube root of 85184........you should get 44....this is the side length, s

The diagonal length is given by

s√3  = 44√3  = about 76.21cm

$${\frac{{\frac{{\mathtt{3}}}{{\mathtt{5}}}}}{{\mathtt{7}}}} = {\frac{{\mathtt{3}}}{{\mathtt{35}}}} = {\mathtt{0.085\: \!714\: \!285\: \!714\: \!285\: \!7}}$$

$${\frac{{\frac{{\mathtt{3}}}{{\mathtt{5}}}}}{{\mathtt{7}}}} = {\frac{{\mathtt{3}}}{{\mathtt{35}}}} = {\mathtt{0.085\: \!714\: \!285\: \!714\: \!285\: \!7}}$$

19 is the answer

AB is the length of the diagonal, sorry.

Is AB a side length....or.......the length of the diagonal  ???

5 is the answer

easy 600

Multiply 3.2 by 2

Subtract 8.1 from this

420