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you do 102/3= 34 unless they count emily but it dosent sound like they do

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0.383 

\(x^2y^2-1 \\\\ =(xy)^2-1^2\\\\ =(xy-1)(xy+1)\)

The "Blue Meanies" transported Math to Earth many thousands of years ago when they landed-  by spaceship - near Chicago..........since then..... "Math"has been nothing but a plague-filled, Pandora's Box to humankind, everywhere.........!!!!!

-11. 

(1/(e^x - e^-x)) = 2   

Notice that we can invert both sides and get :

(e^x - e^-x)  = 1/2     multiply through by 2e^x  

2e^2x - 2 = e^x      subtract e^x from both sides and rearrange

2e^2x - e^x - 2  = 0    this will not factor......let e^x  = y   and we have

2y^2 - y - 2 = 0     and the solutions for this are....y ≈ -.78078     and y  = 1.2808

Therefore, e^x = -.78078 (impossible).......  or e^x = 1.2808

So

e^x  =  1.2808     which means that x = ln 1.2808  = about .2475

23,328. 

first started being used majorly by the ancient greeks to basically explain.. everything.

although, there is evidence of "accidental math" thousands and thousands of years before them even. so there is no way to really tell 

x + 5x + 8x - 5 = 317   simplify on the left

14x - 5 = 317    add 5 to both sides

14x = 322     divide both sides by 14

x = 23 in

5x = 5(23)  = 115 in

8x - 5 = 8(23) - 5 =  179 in

Come on Namadesto,

We have answered 2 of these questions for you in the last 12 hours.

How about you giving us some of your thoughts on how you might be able to solve it ?

We can talk those through with you if you like :)

Hint:  let y=e^x

You can simplify before or after you do the substitution.  :)

I believe that the question is : find two consecutive wole numbers that the sqrt(46) lies between.......

In that case.....the answer is 6 and 7

sqrt(36) = 6

sqrt(49) = 7

And sqrt(46) lies between these

okay, so when you square a (presumably) root, there is one thing you gotta keep in mind.

do not square the numbers individually. aka

(x+6)^2 does not equal x^2 + 36

instead you would do this

(x+6)(x+6)

and use FOIL (first, outer, inner, last) to get your final product.

X x X = x^2

X x 6 = 6x

6 x X = 6x

6 x 6 = 36

so your answer is: X^2 + 12x + 36

3.66repeating

There may be more than one answer for this.......according to whether the growth rate is considered to be lnear, exponential, etc.

Assuming it's linear, the circumference changes by [150.42- 75.36] / [2 - 1]  = 75.06 in each week

If you double a number and then add 28,you get 4/9 of the original number. What is the original Number?

You should try to give people the opportunity to correct or defend their answer if you think it is wrong. :/

Anyway.

\(2x+28=\frac{4x}{9}\\\\ 9(2x+28)=4x\\\\ 18x+252=4x\\\\ 14x=-252\\\\ x=-252/14\\\\ x=-18\)

See my answer....here.......http://web2.0calc.com/questions/please-help_54167

Let N  be the original number

So......

2N + 28 = (4/9)N     subtract (4/9)N and 28 from both sides

2N - (4/9)N = -28     get a common denominator on the left

(18/9)N - (4/9)N  = -28

(14/9)N = - 28      multiply both sides by 9/14

N = -28 (9/14)   =   -2 * 9   = -18  is the original number

aparrently the answer is 6 and 7

ight thx

-6>x-8   add 8 to both sides

2 > x    or, put another way, x < 2

thats what the question says so..... is the ? a set up

is it??

try -8 im not 100 % but im sure it might work

this is a hard question .....