Step-by-step explanation:
Okay, so...
The Median of a trapezoid is directly in the middle. For some weird mathimatical reason you won't ever need to know unless it's on an exam or you become a math major, its midsegment is the average of the top length and the bottom length.
In other words,
EF = ( BC + AD ) / 2
So for part 1, we can use that equation to find x.

![4x-18=[(x+12)+(3x-4)]/2](https://tex.z-dn.net/?f=4x-18%3D%5B%28x%2B12%29%2B%283x-4%29%5D%2F2)
- Simplify within parentheses.
![4x-18=[x+12+3x-4]/2](https://tex.z-dn.net/?f=4x-18%3D%5Bx%2B12%2B3x-4%5D%2F2)
![4x-18=[x+3x+12-4]/2](https://tex.z-dn.net/?f=4x-18%3D%5Bx%2B3x%2B12-4%5D%2F2)
![4x-18=[4x+8]/2](https://tex.z-dn.net/?f=4x-18%3D%5B4x%2B8%5D%2F2)




Part 2 is a lot easier now. All we have to do is plug in 11 for x.



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Answer:
Part I: x = 11
Part II:
B x b x b x b x b x b x b x b x b x b x b x b x b x b x b
Answer:
The customer should choose B because then you pay less for everything not just the pants or the original cost.
Step-by-step explanation:
Use the next convertion factors:
60 seconds are equal to 1 minute
60 minute are equal to 1 hour
24 hours are equal to 1 day in earth

<h2>Then, there are approximately 1.15 earth days in a Mar's day</h2>
Answer:
28
Step-by-step explanation: She cut the rope into thirds so the mathematical equation I used was 9x3 plus the 1/3 she already had which means one more piece of rope.