All Answers 359160 Answers

Use the calc on the home page. 

Sometimes the power symbol is a hat  ^   (it is over the 6 on your keyboard)

7²=7^2

$${\frac{{\mathtt{27.51}}}{{\mathtt{80}}}}{\mathtt{\,\times\,}}{\mathtt{100}} = {\frac{{\mathtt{2\,751}}}{{\mathtt{80}}}} = {\mathtt{34.387\: \!5}}$$

34.4%

I think  that is what the question is asking.  

The smiley faces came up on my phone but they are not displaying on my computer :)

It's so easy

once my mouth got tapped from a burglar that came into the house when I was 9

$$\\4x^2+2y^2=11\\\\
$This is not a circle. It is an ellipse$$$.    

The centre is (0,0) because it is just x² and y² 

If, for example, the centre was    (3,-5)    then it would be (x-3)²   and   (y+5)²

Here it is :)

Your w needs a numerical value but you can do it with the  Wolfram|Alpha calculator.

http://www.wolframalpha.com/input/?i=x%5E2%2F9%2By%5E2%2F16%2Bz%5E2%2F25%3D1

5 lol it's simple I think

-4x15/4=-15

answer is -15

She ate 30 oranges because she has 70 oranges

ate 40 more that she ate

add 30

= 70

Wouldn't it be 3.34

6,954 = 7,900

1,326 = 1,300

4,579 = 5,500

add those up it equals:

14,700

Actually that's a 1 dimensional object rotated about a point to make a circle which is 2 dimensional.

You really want a skinny rectangle rotated about an axis to make a rather flat 3 dimensional cylinder (pancake).

I'm still hungry!!!

if you subtract a positive with a negative the negative turns postive. when you subtract a negative it looks like this - - so put them together to make a +

Pancakes,  did someone mention pancakes?  I want some.  I want some now!!  I love pancakes!

Are these pancakes round?  I think they are supposed to be round..  

let's see.  Tie a 4" peice of cotton onto a needle.  Stick the needle into the middle of the pancake. Now hold the cotton taught so it makes a straight line. Now rotate the taught cotton around the fixed needle.  What shape did you make?  What is a dimension?

Is my pancake this shape?

Now stop fooling around.  I'm hungry!  Give me my pancake!!!

-625/10000

Thanks a bunch! I get it now :)

Draw a right triangle, with point A the top of the vertical pole, point C the bottom of the vertical pole, and point B the place where the wire reaches the ground.

Angle C is a right angle.  Angle B is 75°.

Side BC is the side adjacent to angle B and has a length of 10 ft.

Side AC is the height of the pole and is the side opposite angle B.

The tan function is defined to be the opposite side divided by the adjacent side.

tan(B) = AC / BC   --->   tan(75°)  =  AC / 10   --->  AC  =  10·tan(75°)  =  37.3 ft.

The length of the wire is side AB, the hypotenuse of the triangle.

The cos function is defined to be the adjacent side divide by the hypotenuse.

cos(B) = BC / AB   --->   cos(75°)  =  10 / AB   --->  AB  =  10 / cos(75°)  =  38.6 ft.

If you want a sequence to alternate:  -1, 1, -1, 1, -1, ...  use the expression (-1)^n

If you want a sequence to alternate:  1, -1, 1, -1, 1, ...  either use the expression (-1)^(n + 1) or the expression (-1)^(n - 1).

So:  [(-1)^(n + 1)]·6  will result in the sequence:  6, -6, 6, ...

To make typing easier, I'm going to replace 'f(x)' with 'y':

Problem:  if  y = (x + 4)³  then find the inverse:

First, exchange the variables 'x' and 'y':  x  =  (y + 4)³

Second:  solve for y:                               x^(1/3)  =  y + 4

                                                               y  =  x^(1/3) - 4

Finally, replace y with f-1(x)   --->        f-1(x)  =  x^(1/3) - 4

Congratulations: after 3 tough years in fourth grade you finally made it into fifth grade. If you work hard, you might make it through 5 grade in 3 years. too.

yepp geno is right its 

3x + 3 - 5  =  -4x + 2                        

    3x - 2  =  -4x + 2                        

    7x - 2  =  2                                    

        7x  =  4                                   

         x  =  4/7          

If you mean [-10 - √48 ] / -2

       =  [-10 - √16·√3] / -2  =  [-10 - 4√3] / -2  =  5 + 2√3.

If you mean -10 - √48/-2

       =  -10 - √16·√3/-2  =  -10 - 4√3/-2  =  -10 + 2√3

well you have to answer someones question an get it right. If someone thumbs up your answer then you get a point. 

GOOD LUCK!