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In trapezoid ABCD , sides AB and CD  are  parallel,   Find \(\delta \)

Here's some more   (without concatenation ) 

4! / √4   -  4 / 4   =    24 / 2  -  1   =    12  -  1    =   11

4! / √4  + 4/4   =   24/2  + 1   =  12 + 1  =  13

4! / √4   + 4 / √4   =   24/2  + 4/2  =  12  + 2  = 14

4*4  - 4/4    =  16 - 1   = 15

4 + 4 + 4 + 4  = 16

4 * 4   +   4/4    =   16 + 1  = 17

4 * 4   + 4 / √4  =  16   + 4/2   =   16  + 2    =  18

4!  - 4  -  4/4   =   24  - 4 - 1   =   19

4!/√4  + 4 + 4   =   24/2 + 4 + 4  =  12 + 4 + 4   = 12 + 8 =  20

4! - 4 + 4/4  =   24  - 4  + 1   =  20 + 1  =  21

4! -  4 + 4/√4   =  24 - 4 + 4/2  =  24 - 4 + 2   =  20 + 2  = 22

4! -  (√4 *√4) / 4   =  24 - (2 *2)/4  =  24 - 4/4  = 24 - 1 = 23

4! - 4/√4  + √4  =   24 - 4/2 + 2  =   24  - 2  + 2   =  22 + 2  =  24

234+416 = 650

234/650 = 0.36 or 36%

My solution.

To find the surface area of a cylinder expand the middle portion to a rectangle.. Then, take the 2 tops and find the area of each of them... After that, add the area of the 2 circles with the area of the rectangle!

Um,,, what is x?

Yes, it is. Very short way!

fROM COOLMATH : All sides All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the interior angles, we know that the sum of all the angles is 540 degrees (from above)... And there are five angles... So, the measure of the interior angle of a regular pentagon is 108 degrees.are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the interior angles, we know that the sum of all the angles is 540 degrees (from above)... And there are five angles... So, the measure of the interior angle of a regular pentagon is 108 degrees.

Ya I know but I feel so lonely 

Let x be the number of minutes that equalize the cost of both plans

So  we have

25   + .10x   =  20   + .12x         subtract  .10x, 20 from both sides

5   =  .02 x

5 =  (2 /100) x       reduce the fraction

5  =  (1/50) x       multiply both sides  by 50

250 =  x    =    the number of minutes that equalize the cost of both plans

Comparing the slopes of  .10  and .12.......the plan that costs $20 per month and 12 cents per minute is cheaper if the number of minutes < 250......after 250 minutes, the other plan is better

If the radius is 26.2 cm  the diameter is twice that  =  52.4 cm

And 5m   =  500 cm

So......the nail reaches a max height (with respect to the ground)  of  

500 + 52.4   =  552.4 cm

y=x-5

y=1x-5

The slope is 1.

The horse ran 11 (1/8)  =  11/8 miles

And 15 min 30 sec  =  15.5 min

So

Distance /  Time  =     (11/8) miles / (15.5) min  ≈  .089  miles per minute

y = -9x  + 2

In this form, there really isn't any "work" to be done......

The slope is  -9    and the y intercept  is 2

k / (-8)  =  -3      we can write

(-1/8)k  =  - 3     and we can take the multiplicative inverse of (-1/8)  = (-8/1) on both sides to solve

So

(-8/1) (-1/8) k   =  -3 (-8/1) 

k  =  24

Hola como estan jiente! Estoy en la escuala

Here's a possibility using the graph  of  y  = 20sin(πx / 3  +  π / 2)  + 80

Look at the graph, here :  https://www.desmos.com/calculator/derjhfgw9m

At  x  =  0   (representing year 1999)  we have 100 horses

At x  =  3  ( representing year 2002 )  we have 60 horses

And again, at x = 6 (representing year 2005 )  we're back up to 100 horses

Sorry, I don't understand what "b"  is asking for

c)  In 2000  ( x = 1)  there were 90 horses

d) In 2015  ( x = 16) there were 70  horses

20763

1.4090 minutes average 

On what? A calculator its  complicated on here it's this sigh. /

It's - .5

Here's one (but not the only) possibility

Look  at tthe following graph  of   sin (πx/2  + π/2)  : https://www.desmos.com/calculator/bdvsovus1f

Let the max height of the curve represent "all the way to the right"  and the minimum height of the curve be "all the way to the left"  ....note that there are 4 beats from starting  from all the way to the right, swaying all the way to the left and back again to the right

The amplitude  is  1     (this could be changed without affecting the pattern of beats )

The period is 4 radians.....each radian represents a beat...!!!

P.S. -  I don't understand what is meant by "the equation of the axis " 

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