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Hey, what's going on here? Someone doesn't like correct answers; that must be you, Melody.

Would you give me a reasonable explanation for blocking my answer?

Hey, what's going on here? Someone doesn't like correct answers; that must be you, Melody.

Would you give me a reasonable explanation for blocking my answer?

1/4 hour  =  15 min 

1/3 hour  =  20 min 

1 hour     =  60 min 

1/5 hour  =  12 min   =>  total 107 min or 1 hour 47 min  

_.

What numeral is in the 100th decimal place in the decimal representation of 6/11?  

This is a repeating decimal.  It goes  

0.54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

   54 54 54 54 54 54 54 54 54 54  

It's a 4.   

_.

You can do this Ticon6  :)

How many cubes does Eva have?

Why is that so? Is the problem because my answer is correct, or what?! 

PM = [sqrt(2 * 13² + 2 * 18² - 14²)] / 2 

PM ≈ 14.053

Guys im confused. 

From trials and error I found that: \(2^{m+2}\) works for some reason. 

Help me with your knowledge!!

LOL you got me there Ginger !   

To find the center of the circle, complete the square for both x and y.

x² + y²  =  4x - 12y - 39     --->     (x² - 4x + ...) + (y² + 12y + ...)  =  -39

                                                     (x² - 4x + 4) + (y² + 12y + 36)  =  -39 + 4 + 36     

                                                                           (x - 2)² + (y+ 6)² =  1     

The center is:  (2, -6)     

The radius is 1 

I do not believe that the Pythagorean Theorem applies because PM is a median, not an altitude.

Since the triangle isn't an isosceles triangle, the median is not an altitude.

You can use this formula:  

    PM  =  sqrt( [ 2·PQ² + 2·PR² - QR ] / 4 )

1. 64000

2.78000

3. 55 hours

so according to the Pythaogorean Thereom,

\(a^2+b^2=c^2\)

in this case,

\(7^2+{PM}^2=18^2\)

so \(49+PM^2=324\)

\(PM^2=275\)

\(PM=5\sqrt11\)

and geno was literally 8 seconds before me!

its basically 2 iscoceles triangles if think about it, so if bac=76, then abd=180=152=28 

bdc=180-76=104 

dbc=180-104=76 76/2=38

28+38=66

angle(ADB) = angle(BAC)  =  76

angle(BDC) = 180 - angle(ADB) = 180 - 76 = 104

angle(DCB) = angle(DBC) = (180 - 104)/2 = 38

angle(ABD = 180 - 76 - 76 = 28

angle(ABC) = 28 + 38 = 66

Factoring  40⁴ - 19⁴  =  (40² + 19²)(40² - 19²)  

                                  =  (40² + 19²)(40 + 19​)(40-19)

                                  =  1961 x 59 x 21

                                  =  37 x 53 x 59 x 3 x 7

integer values of a

Hello Guest!

\(x^2 + ax + 8a = 3x + 4\\ x^2-3x+a(x+8)-4=0\)

How many integer values of a? I think three.

\(a\in\{0,-1,-6\}\)

  !

(1 + .016)²⁰  = 1.3736     which is a   37.36 % increase

Manipulte into vertex form of a parabola

3y=2x^2+16x+28

3/2 y = x^2 + 8x + 14

        =  (x+4)^2 - 2

y = 2/3 (x+4)^2 - 4/3         vertex is then -4,  - 4/3      added = - 5 1/3

Volume of a cylinder    pi r^2 h

pi 3^2 * 6    =  pi  4^2 * h

3^2 * 6 = 4^2 * h

54 = 16 h

h = 54/16 = ....... inches

Part A:  Find the square root of the constant term (121) and multiply that number by 2.

Part B)  Divide the coefficient of the linear term (11) by two and square that result.

If you draw a horizontal line where  y = -1  it will cross the graph at two points.

2 · log(a - 2b)  =  log(a - 2b)²                        log(a) + log(b)  =  log(ab)

2 * log (a -2b) = log (a) + log (b).    --->        log(a - 2b)²  =  log(ab)

                                                       --->             (a - 2b)²  =  ab   

                                                       --->    a² - 4ab + 4b²  =  ab

                                                       --->    a² - 5ab + 4b²  =  0

                                                       --->      (a - 4b)(a - b)  =  0

                                                       --->       Either  a - 4b  =  0     or     a - b  =  0

                                                       --->                          a  =  4b                a  =  b

                                                       --->                       a/b  =  4               a/b  =  1

Discriminat of the Quadratic Formula must  = 0 for this to be true

b^2 - 4ac = 0

b^2 - 4 ( 3)(27) = 0

b^2 = 324

b = +- 18