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$${\frac{{\mathtt{5}}}{{\mathtt{0}}}} = \underset{{\tiny{\text{Error: DivByZero}}}}{{\frac{{\mathtt{5}}}{{\mathtt{0}}}}}$$ yes, that.

E = z·σ/√n

At 90% confidence, z = 1.645

E = 1.645·σ/√480

To complete this, you need the value of σ  -- do you have this value? If so, you can finish this calculation.

$$4.323 * 10^{-9} = 4.323e-9$$

$${\left({\frac{{\mathtt{9.5}}}{{\mathtt{2}}}}\right)}^{{\mathtt{2}}} = {\frac{{\mathtt{361}}}{{\mathtt{16}}}} = {\mathtt{22.562\: \!5}}$$

It is already fully simplified

The compound interest formula is:    A  =  P(1 + r/n)^(n·t)

A = Final Amount         P = Beginning Amount = 32,600         r = rate (as a decimal) = 0.085

n = number of times compounded per year = 4                      t = number of years = 1

A  =  32600(1 + 0.085/4)^(4·1)    =    35460.58

Interest earned will be final amount minus beginning amount:  $35,460.58 - $32,600.00  =  $2860.58

1+1=2 so that is that

please help me!!!!

This ratio cannot be simplfied

Approximately 30.85%

Once you know the standard deviation value, the other values aren't necessary to find the percentage.

This is an exponential equation. 'a' is the coefficient' and 'b' is the base.

2x² - 12x + 8

Start by factoring out the common factor:

2(x² - 6x + 4)

When factored it will look like this:    2(x -   )(x -   )

The two numbers that you need must have a product of 4 and a sum of 6. 

There aren't two whole numbers that work; if factored, they will be square roots.

I would suggest using this proportion:   RAD / π  =  DEG / 180°

If you have 4.56 radians:     4.56 / π  =  DEG / 180°     --->     DEG  =  4.56 * 180° / π   =    261.3°

OR:  Always multiply the radians by 180°/π 

|x+2|=7-4

|x+2|=3

x+2=3 or x+2=-3
x=3-2 or x=-3-2

x=1 or x=-5

Differentiate

2x+11=0

X=-5.5

The 2nd derivative is 2

Which is greater than 0 so this will give a minimum.

You probably want 1 million

1000000

Press 2nd then

atan(-6.5*10^-8)=

The graph for standard deviation is perfectly symmetrical around the mean.

If 68% of the scores lie between -1 and + 1, half of them, that is 34% will lie between 0 and +1, and the other 34% of them will lie betweeen -1 and 0.

A rational number is any number that can be written as a common fraction.

As a decimal fraction, it either terminates (as 6, -3 1/2, and 7/20 do) or it infinitely repeats (as 1/3, 5 3/7, and -4 5/9 do).

Technically, a rational number is any number that can be put into the form  a/b,  where a and b are both integers and b ≠ 0.

The integers form this set:   { ..., -4, -3, -2, -1, 0, 1, 2, 3, 4, ...}.

First, at the bottom left-hand corner, make certain that the calculator is in degree mode or radian mode, whichever you want.

Then, hit the (2nd) key at the top-left-hand side.

Below the (2nd) key is the (asin) key, which is the inverse sine key.

Enter the value.

Hit the equal sign.

Teh calculator at this site will handle this problem quite nicely.

i think its 910...

Use any scientific calculator (including the one at this site) to find invcos.

However, there is a problem here: the cos can never have a value larger than one, or smaller than -1. Here, the value is 1.411..., an impossible situation.

I would suggest that you look again at how the problem was set up; there's a mistake somewhere.

Is the right angle at E or is it at F?

Either way, use the Pythagorean Theorem (but it will be used differently, depending upon the location of the right angle).

∞  =  ∞²  =  ∞³  =  ∞^4  =  ∞^5  ...  =  ∞^∞