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Try looking at this.

only one and 127 goes into 127 

but

127 goes into any multiple of 127

eg

it goes into 254,

(7+9i)-(2-i)

=7+9i-2+i

=5+10i

-3*-3=9

that is the answer

you multiply it by 100, then write %

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   the product of a rational number multiplied by itself.

   
   

   
   

   
   

   
   
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     the product of a polynomial multiplied by itself.

     
     

     
     
     
     
   
   

   
   

   
   

   
   

   
   
   
   

No, it is a prime number here copy and paste this helpful website, that is where I confirmed the answer, so I'm hoping this will help you in the future. ;)

http://www.mathsisfun.com/prime_numbers.html

Let b = the base   ....then the height = b-2 ....so....

15 = (1/2(b)(b-2)   multiply both sides by 2

30 = b^2 - 2b         rearranging, we have

b^2 - 2b - 30 = 0   using the on-site solver, we have....

$${{\mathtt{b}}}^{{\mathtt{2}}}{\mathtt{\,-\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{b}}{\mathtt{\,-\,}}{\mathtt{30}} = {\mathtt{0}} \Rightarrow \left\{ \begin{array}{l}{\mathtt{b}} = {\mathtt{1}}{\mathtt{\,-\,}}{\sqrt{{\mathtt{31}}}}\\
{\mathtt{b}} = {\sqrt{{\mathtt{31}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1}}\\
\end{array} \right\} \Rightarrow \left\{ \begin{array}{l}{\mathtt{b}} = -{\mathtt{4.567\: \!764\: \!362\: \!830\: \!021\: \!9}}\\
{\mathtt{b}} = {\mathtt{6.567\: \!764\: \!362\: \!830\: \!021\: \!9}}\\
\end{array} \right\}$$

So the base is (√31 + 1)cm    [and the height = (√31 - 1)cm]

In the first case, the exponent only applies to the "2"...NOT to the minus...so we have......

-2^2 = -(2x2) = -4

In the second case, the exponent applies to the whole thing...thus....(-2)x(-2) = 4

1650 ft..... up 150 ft, down 670 ft, up 320ft, what was his elevation then?

1650 + 150 - 670 + 320 = 1450 ft.

You left out two other possible permutaions, Melody

71/5 - (4 + 1/15)

and

(7 + 1/5) - (41/15)

(LOL!!!)

awww but math was too easy and teachers were bored so they were all like "omg lets confuse the children" so they put in variables so we'd all be too confused and stupid to ever get a career involving math. :)

$$\frac{8}{3}= 2\frac{2}{3}$$

$$\left({\mathtt{7}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{5}}}}\right){\mathtt{\,-\,}}\left({\mathtt{4}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{15}}}}\right) = {\frac{{\mathtt{47}}}{{\mathtt{15}}}} = {\mathtt{3.133\: \!333\: \!333\: \!333\: \!333\: \!3}}$$

Is that your question?

OR is this your question?

$${\frac{{\mathtt{71}}}{{\mathtt{5}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{41}}}{{\mathtt{15}}}} = {\frac{{\mathtt{172}}}{{\mathtt{15}}}} = {\mathtt{11.466\: \!666\: \!666\: \!666\: \!666\: \!7}}$$

Notice that geno's second equation can be written as...

35x + 65y = 940      and.....using the first equation, we have....   y = 20 - x ........so.....substituting for y in the second, we have

35x + 65(20-x) = 940

35x + 1300 - 65x = 940    simplify

-30x = -360       divide both sides by -30

x = 12   this si the number of 350 crown jackets

So ....12 + y = 20  →   y = 8 = the  number of 650 crown jackets

To divide common fractions, multiply by the reciprocal:

(16/165) ÷ (17/165)  =  (16/165) x (165/17)  =  16/17       (The 165's cancel.)

3/5 = 9/15

So

9/15 + - 4/15  =

9/15 - 4/15  =

5/15 =

1/3

There are two equations, one for the number of jackets and one for the value of the jackets.

Let  x  represent the number of jackets that cost 350 crowns each and

let  y  represent the number of jackets that cost 650 crowns each.

Number of jackets:               x + y  = 20                   --->     y  =  -x + 20

Value of the jackets:  350x + 650y  =  9400              --->     y  =  -(350/650)x + 9400/650

Graph these on the same graph; the point where they intersect will tell you how many of each were bought.

There are many equations that can be used to find a decimal approximation of pi. Wikipedia has several.

It depends upon which log you use.

If you use common logs, which use the abbreviation 'log' and you use the log key on your calculator, you will get 10^6 = 1,000,000.

If you use natural logs, which use the abbreviation 'ln' and you use the ln key on your calculator, you will get e^6 = 403.42...

3^1  =  3

3^2  =  3 x 3  =  9

3^3  =  3 x 3 x 3  =  81

A parabola can have this form:  y - k  =  a(x - h)²

where (h,k) is the vertex and a is an expansion factor.

The points that you describe can be interpreted as (0, 7200), (8000, 10000) and (16000, 7200) with the vertex at (8000, 10000). I got the 8000 because it has to be halfway between the starting x-value (0) and the ending x-value (16000).

Thus, x = 8000 and y = 10000. Putting them into the equation to find the value of a:

      y - 10000 = a(x - 8000)²

I can use any point for the values of x and y, so I will choose (0, 7200):

    7200 - 10000  =  a(0 - 8000)²

               -2800  =  a(64000000)

              a  =  -2800 / 64000000  =  -7/160000

So, an equation of the parabola is:  y - 10000  =  (-7/160000)(x - 8000)²

Let's do this step by step.

First, write out the problem.

5 * 2 * (-4) + 3 * 6

Remember your order of operations: PEMDAS

10 * (-4) + 3 *6 In this step I multplied five and two.

-40 + 3 * 6 In this step I multiplied ten and negative four.

-40 + 18 Here I multplied three and six and got eighteen.

-22 Finally, we added. Negative 22 is your final answer.

Since you have a denominator of 3, multiply 3 times both sides:

3[y - 2]  =  3[ -5/3(x - 4) ]               When you multiply by 3, multiply only the first factor, not both of them.

3y - 6  =  -5(x - 4)                           Use distributive property.

3y - 6  =  -5x + 20                          Add 6 to both sides.

3y  =  -5x + 26                               Divide both sides by 3.

y  =  (-5/3)x + (26/3)