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That extra skew line from the origin doesn't seem to make sense ://

Oops....thanks, Guest....my bad!!!!!

That is an hyperbola CPhill. ☺

In quadrilateral , we have , , and . Sides  and  are extended past  and , respectively, to meet at point . If  and ,then what is ?

thankyou i really needed that👌✊✌🔥😜😂

Mellie.....this explains how to upload an image :  http://web2.0calc.com/questions/how-to-upload-an-image-nbsp_1

Also......your questions are difficult to read with all the LaTex (??) stuff......just submit them with "normal typing"...........

Good to see you on......CPhill

Let s be the side of the tile before the increase......and since the areas they cover are equal, we have:

1210s^2   = 1000(s + 1)^2   simplify

1210s^2  = 1000s^2 + 2000s + 1000     rearrange

210s^2 - 2000s -1000  = 0   divide through by 10

21s^2 - 200s - 100 = 0     factor

(21s + 10) (s -10) = 0

So  s = -10/21 cm......reject  ......or....... s =  10 cm

So.....the old tiles were 10 cm on each side and the "new tiles" are 11cm on each side

Fri 30/10/15

    1)  Solving equations on the Web2.0calc

    http://web2.0calc.com/questions/quadratic-formula_58236#r1

    2)  Great geometyy challenge provided by CPhill.   Brilliant answer from Heureka.

    http://web2.0calc.com/questions/cphill-s-challenge

Yes, I just did one to check that it was working.

https://gyazo.com/e9e42e2186f9aa1caa9b2744bff33ad2

To get into equation mode, there is some black bars on the top right ofthe calc. 

Press on those and you will get a drop down menu.  Equations is one of the choices.

We have the points  (50,000, 3300)  and (70,000, 4100)......the slope is given by :

[ 4100 - 3300 ] / [ 70,000 - 50,000]  = 1/25  = .04

So  using this slope and either of the two points we can write a linear equation.....

y - 3300  = .04 (x - 50000 )   simplfy

y - 3300 = .04x - 2000      add 3300 to both sides

y = .04x + 1300

Here's the graph........https://www.desmos.com/calculator/isijxijsgu

Just to the left of 1?? it is this key "x^2".

Go to this link and WATCH the video about Complex Numbers:

https://www.khanacademy.org/math/precalculus/imaginary_complex_precalc/complex_num_precalc/v/complex-number-intro

No prob.......

Thank you for your help, 

I was lost about the both side, I just did it again and got it right ! 

Thank you so much ! I really appreciate ! 

Just put this into our onsite calculator and hit "enter"

Magic will happen.....!!!!!

I think the function is

C(x) = 0.3x + 100

The 100 is the "fixed cost"....in other words.....it costs you $100 before you even drive the first mile.....!!!!!.....so, on the graph of the function, we would have the point (0. 100)   = 0 miles driven = $100 cost

(2)   Set the function = 350 and solve....so we have

350  = 0.3x + 100   subtract 100 from both sides

250  = 0.3x   divide both sides by 0.3

x = about 833.33  miles.....this is how far you can drive for $350.......!!!!!

10/20-2+10     note ...  10/20  = 1/2....so we have

1/2 - 2 + 10  =

1/2  + 8   =

1/2 + 16/2   =

17/2

Whoooooo awesome ! 

So basically, I just have in order to draw that to make my onw table and then plug my number in the x value

then I just have to plug the coordinate points into the graph ! 

Perfect, Thank you for your answer ! :)

I have graphed both functions here for you.........https://www.desmos.com/calculator/2d7n7oewj7

If you hold down your left key on your touchpad or mouse and trace along each curve, you can see as many x and y values as you want to.......then.....you make make a rough sketch on your own just by picking  few point values on both graphs......

Does that help???

I assume this is :

h(p) = p − 5 p^2 + 3    if so.....take the derivative

h ' (p)   =  1 - 10p

Set this to 0    and solve

1 - 10p = 0        add 10 p to both sides

1 = 10p        divide both sides by  10

p = 1/10      so ,  we have a critical number at x = 1/10  = 0.1

The second derivative = -10.........so tthis is a max

And the point is  (0.1, 3.05)

Here's the graph.......https://www.desmos.com/calculator/hvhpff2qst

Add 4 to both sides   and c = 13

There are an infinite number of real numbers between any two numbers on the number line that we choose.....no matter how "close" together they appear to be.....believe it or not.......!!!!!!!

3.14 + 32= 35.14 (that's the rounded version