Answer:
3,750 cars.
Step-by-step explanation:
We are given that the equation:
![y=9000-2.4x](https://tex.z-dn.net/?f=y%3D9000-2.4x)
Models the relationsip between <em>y</em>, the number of unfilled seats in the stadium, and <em>x</em>, the number of cars in the parking lot.
We want to determine the number of cars in the parking lot when there are no unfilled seats in the stadium.
When there are no unfilled seats in the stadium, <em>y</em> = 0. Thus:
![0=9000-2.4x](https://tex.z-dn.net/?f=0%3D9000-2.4x)
Solve for <em>x</em>. Subtract 9000 from both sides:
![-2.4x=-9000](https://tex.z-dn.net/?f=-2.4x%3D-9000)
Divide both sides by -2.4:
![x=3750](https://tex.z-dn.net/?f=x%3D3750)
So, there will be 3,750 cars in the parking lot when there are no unfilled seats in the stadium.
![\frac{(5x-18)(x)}{2} =35](https://tex.z-dn.net/?f=%20%5Cfrac%7B%285x-18%29%28x%29%7D%7B2%7D%20%3D35)
![(5x-18)(x)=70](https://tex.z-dn.net/?f=%285x-18%29%28x%29%3D70)
![5x^2-18x-70=0](https://tex.z-dn.net/?f=5x%5E2-18x-70%3D0)
By the time you factorize this, you will get
x = 5.9521078984053 or <span>-2.3521078984053
</span>Please mark me as brainliest.
Answer:
Each Angle of Decagon = 144 degrees
Step-by-step explanation:
The interior angles of a decagon add up to 1440
If they are of the same measure, then every angle will be equal to:
Each Angle of Decagon = 1440/10
Each Angle of Decagon = 144 degrees
In my work I used t=trains and m=minutes:
30+30= 60m/2t
<span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
</span><span>30+30= 60m/2t
Total= 720m/24t
1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30+1:30= 4 o' clock
Total= 372m/12t
24t+12t= 36t
The answer is:
36 trains in total</span>