Answer:
x = -6
Step-by-step explanation:
3x-6+4=-20
Combine like terms
3x -2 = -20
Add 2 to each side
3x-2+2 = -20 +2
3x = -18
Divide each side by 3
3x/3 = -18/3
x = -6
Answer:
![A_w=8x+336](https://tex.z-dn.net/?f=A_w%3D8x%2B336)
Step-by-step explanation:
From the question we are told that:
Length of pool ![l_p=34](https://tex.z-dn.net/?f=l_p%3D34)
width of pool ![w_p=x](https://tex.z-dn.net/?f=w_p%3Dx)
Width of brick-walk way
Generally the equation for Area of the pool
is mathematically given by
![A_p=l_p*w_p\\\\A_p=34*x](https://tex.z-dn.net/?f=A_p%3Dl_p%2Aw_p%5C%5C%5C%5CA_p%3D34%2Ax)
Generally the equation for Area of the pool with its walkway
is mathematically given by
![A_w'=l_w'+w_w'\\\\A_w'=l_w'+w_w'](https://tex.z-dn.net/?f=A_w%27%3Dl_w%27%2Bw_w%27%5C%5C%5C%5CA_w%27%3Dl_w%27%2Bw_w%27)
Where
![l_w'=length\ of\ pool\ with\ walkway\\\\l_w'=l_p+4+4\\\\l_w'=34+4+4\\\\l_w'=42](https://tex.z-dn.net/?f=l_w%27%3Dlength%5C%20of%5C%20pool%5C%20with%5C%20walkway%5C%5C%5C%5Cl_w%27%3Dl_p%2B4%2B4%5C%5C%5C%5Cl_w%27%3D34%2B4%2B4%5C%5C%5C%5Cl_w%27%3D42)
Therefore
![w_w'=width\ of\ pool\ with walkway\\\\w_w'=w_p+8\\\\A_w'=42*(x+8)](https://tex.z-dn.net/?f=w_w%27%3Dwidth%5C%20of%5C%20pool%5C%20with%20walkway%5C%5C%5C%5Cw_w%27%3Dw_p%2B8%5C%5C%5C%5CA_w%27%3D42%2A%28x%2B8%29)
Generally the equation for pool's walkway
is mathematically given by
![A_w=A_w'-A_p\\\\A_w=(42*(x+8))-(34x)](https://tex.z-dn.net/?f=A_w%3DA_w%27-A_p%5C%5C%5C%5CA_w%3D%2842%2A%28x%2B8%29%29-%2834x%29)
![A_w=8x+336](https://tex.z-dn.net/?f=A_w%3D8x%2B336)
The first thing you should know is that to represent a parabola you need at least three points, which are given by the enunciation of the problem. Therefore, the function that best represents the parabola is: y = -x^2 - 2x + 3
Graphic attachment.
Step-by-step explanation:
The question needs to be more specific. But assuming it is 0.5y/(4/9), I will solve it.
This would make it 4.5y/4 =y + 3/8
- Multiply 4 to both sides
4.5y = 4y + 12/8
- Subtract 4y to both sides
0.5y = 12/8
- Divide both sides by 0.5
y = 3
Now plug in to check.
0.5(3)/(4/9)=3+3/8
Both equals 3.375!
If this helped, please feel free to pick this answer as the brainliest! Thank you very much and have a wonderful day!