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Use proportions. 

(9÷6)=(2÷x).

Solve for x.

X=1.25 

arc sine is the same as inversed sine

use asin

(5÷3)-(3÷4)

You should first find a common denominator, which is the bottom number of the fraction. In this case it's 12 (since both 3 and 4 will divide 12).

With 12 as the denominator,  (5÷3) becomes (20÷12). (3÷4) becomes (9÷12).

Now that you have fractions wth the samr denominator,  you can subtract the numerators, giving you, 

(20÷12)-(9÷12)=(11÷12)

I am answering you now.  We have many questions, we do not have time for all.

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I'm not sure what you're after :( ...

The exponent in this expression is pretty large: 10^999999999999

(N÷4)-2=3

First add 2 to both sides of the equation. 

This gives you (N÷4)=5

Now multiply both sides by 4.

This should result in N=20.

n/4 - 2 = 3    Add 2 to both sides:

n/4 = 5       Multiply both sides by 4:

n = 20

Test: n/4 - 2 = 20/4 - 2 = 5 - 2 = 3, seems ok, :)

Use this formula:

A = bh/2

Where b is the base and h is the height

isolate what?

Which formula are you expected to use for variance?  There are 2. 

You do know that

(5m+4n  +  m+58  +  2n+43  +  46  +  40)/5 = 53

5m+4n  +  m+58  +  2n+43  +  46  +  40       = 265

6m+6n  + 187       = 265

Now you need the formual for variance.

s3 = 403/60 - 18/5 - 8/3

s3 = 403/60 - 216/60 - 160/60 = 27/60  =  9/20

It depends on the type of calculator you have. On a casio look at the second key functions accessed with the "shift" key.

Right next to the "2nd"  button

We need to find the side length....this will be the cube root of 2197 = 13mm

Since we're in 3-D, we have something that is analogous to the P Theorem for finding the length of the diagonal, D.....it is given by

D = √[s^2 + s^2 + s^2] =    √[3 s^2]  = s√3

So

D = 13√3  = about 22.52 mm

BTW....this "formula" can be developed from using the P Theorem twice.....I'll derive it only if you're interested.....

..........................................................................................................................

$$\\\frac{240km}{1hour}\\\\
=\frac{240\div 60km}{1minute}\\\\
=\frac{4km}{1minute}\\\\
=\frac{2km}{30seconds}\\\\$$

Start by dividing both sides by -8     

Good one TJM   :)

It's already factored....i think you want to "expand" this

(w - 2)^2 =

(w - 2) (w - 2)  =

w^2  - 4w + 4

it depends on the first half.

if the first half is "the " then the other half is "loop"

but if the first half is "loop" then the other half is "the "

Think about this......what real number could we multiply by itself to get -36 ???

Answer.....there isn't any.....a positive times a positive is a positive......and a negative times a negative is a positive

Now......let's define an imaginary number, i,  to be √-1

So

√-36 = √[-1 * 36] = √-1 * √36 =  i * 6   = 6i

And that's why your calculator gave you that answer.....

i stands for imaginary number, $${i} = {\sqrt{-{\mathtt{1}}}}$$.

this is because no number squared can equal a negative number

$${\left(-{\mathtt{1}}\right)}^{{\mathtt{2}}} = \left(-{\mathtt{1}}\right){\mathtt{\,\times\,}}\left(-{\mathtt{1}}\right)$$

a negative times a negative is a positive so the answer is just 1
positive times positive is also positive so you get 1.

if a math problem asked you for the square root of a negative number you either learned about it already or somewhere else you made a mistake.

good luck yo

-31/12 is in lowest terms. -31 is a prime number, the greatest common denominator of 31 and 12 is 1.

Yes.....let's be done with the "Olympic medals" question.....a question shouldn't take more time to answer than the event it is referencing took to enact......

Nauseated.....I believe you're suffering from a slight case of "Mucus" Numbers.....which is a  similar series to the "Lucas" Numbers......except that it's snot.......

$$\\\frac{0.54}{1000}=\frac{x}{1800}\\\\
x=\frac{0.54}{1000}\times 1800\\\\
x=\frac{0.54}{10}\times 18\\\\$$        whatever cubed