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Do you realize how rude you sound?  

Solve for x:
-sqrt(2)-x^2 = 0

Add sqrt(2) to both sides:
-x^2 = sqrt(2)

Multiply both sides by -1:
x^2 = -sqrt(2)

Take the square root of both sides:
Answer: | 
| x = i2^(1/4)        or               x = -i2^(1/4)

Press "2nd" key first, then "acos", which is the same as cos^-1, and then = sign.

Let the width of the rectangle be=a, then:

Length of the rectangle=3a

P=2[ a +3a]

P=2a +6a

P=8a

||3-x|-2x|<=9

Remember that if   a = m, then    l a l   =  m,  if a> 0   or  l a l  =  -m,  if a < 0

Taking 3-x out of the absolute value bars, we have that either

l 3 - x - 2x l < = 9          or  that          l -3  + x - 2x l <  =  9

And likewise, we have that

3 - x - 2x < = 9             or that            3 - x + 2x < = 9

                                   simplify

3 - 3x < =  9                                        x + 3 < = 9

-3x < = 6                                             x < =  6

x >= -2       

So      -2 <= x <=  6

how do i get the answer to be for example 6.908*10^-35

6.908*10^-35=6.908 X 10^-35

2*(a+3a)=2*4a=8a

tan(89)*4

(57.29) X 4=229.16

1,6E+00= ??=1,6

My bad! Thanks though!

Actually, buubleman, CPhill explained the N = the number of apples Julia started it.

So... the answer is not 32, but...

N=50

Maryanne planted 4 rows with 10 plants each, so we must multiply 4 rows by 10 plants.

4*10=40

Maryanne planted 40 plants.

Gary planted 5 rows with 4 plants each, so we do the same thing.

5*4=20

Gary planted 20 plants.

Maryanne planted more corn than Gary.

(You can also tell in this specific case that Maryanne planted more because she has higher numbers. Note that this isn't a practical way to do it, though.)

Again in my work sheet i do not have 32, the worksheet is in another language. So maybe i translated it incorrectly!

The formula for compound interest  is

P(1 + r/n)^(nt)      where P is the beginning principal, r is the interest rate in decimal form, n is the number of compoundings per year, and t is the time in years....

So.....you alreaady have the correct form for the formula..... just "plug" it in.......

d . Probability that the student took only 1 class equal the sum of the leftmost and rightmost numbers in the circles divided by 240  = [60 + 50] / 240  = 110/240  = 11/24 = about 45.8%

e.  Probability that the student took at least one class  = 1 - P(that they took neither class)   =

1 - 30/240   =   1- 3/24   =   21/24 = 7/8  =   87.5%

Let N be the number that Julia started with.......then  we have that.....

N(.80)(.80)   = 32

N (.64)  = 32     divide both sides by .64

N = 50

Check....at the end of the first day, she ate 20% of 50   = 10....so there are 40 left

At the end of the second day, she ate 20% of 40  = 8......there are 32 left

31.4159265359 cm

4.5squared takeaway 53 spuare root

4.5^2 - sqrt(53)=

20.25 - 7.28=12.97

what's x when 24= 230/x

24=230/X Cross multiply

24x=230 divide both sides by 24

x=230/24

x=9 7/12

there is no answer i afraid,

this is one of the hardest problem i have ever seen

if you can solve this you must be amoung the mathematics genius such as euler and hardy

This same question appeared to have been answered yesterday by CPhill. Here is answer:

moderator #1 CPhill

Unfortunately.......the app that enables us to upload images is not working at this time.....I can describe the Venn diagram to you, however

Outside the cirlces there will be a category "Neither"   this will = 30

There will be two circles intersecting........the left circle can be labeled "Math"  and the right one "English"     the intersecting part can be labeled "Both"

In the leftmost part of the Math circle, we have the number  65

In the intersection of the circles [ "Both"]  we will have the number 95

In the rightmost part of the English circle we will have the number 50

Probability that they took Math (M) or English (E)  is given by:

P(M or E)   = P(M) + P(E) - P(M and E)  =

                      160/240    +  145/240  - 95/240  =   210/240  =  7/8  = about 87.5%

THE NUMBERS APPEAR TO BE DIFFERENT, BUT JUST USE THE SAME PROCEDURE WITH YOUR NUMBERS TO GET YOUR ANSWER.

(3^2)^5=3^10

You can type x = 1/8 directly into the calculator on the home page and it will calculate the value.  However, it doesn't store x, so you can't use it directly in subsequent calculations.

More general approach (though I've just illustrated the final part graphically rather than describing it formally):

Thanks Alan,

YES, that is exactly how I did do it - I was looking at yours and at Wolfram|Alpha.

But it still started by dividing everything by dx.      :/