Answer:
85,200
Step-by-step explanation:
21,300*2=42,600
42,600*2 = 85,200
Answer:
v min (-2;-3)
Step-by-step explanation:
its going to be a parabola with a minimum of (-2;-3) I hope it helps
Given:
The value of the solid's surface area is equal to the value of the solid's volume.
Length(l) = 9 units
width(b) = 4 units
Height(h) = x units
To find:
The value of x.
Solution:
Solid's surface area is
![Area=2(lb+bh+hl)](https://tex.z-dn.net/?f=Area%3D2%28lb%2Bbh%2Bhl%29)
![Area=2(9\times 4+4\times x+x\times 9)](https://tex.z-dn.net/?f=Area%3D2%289%5Ctimes%204%2B4%5Ctimes%20x%2Bx%5Ctimes%209%29)
![Area=2(36+4x+9x)](https://tex.z-dn.net/?f=Area%3D2%2836%2B4x%2B9x%29)
![Area=2(36+13x)](https://tex.z-dn.net/?f=Area%3D2%2836%2B13x%29)
![Area=72+26x](https://tex.z-dn.net/?f=Area%3D72%2B26x)
Volume of solid is
![Volume=l\times b\times h](https://tex.z-dn.net/?f=Volume%3Dl%5Ctimes%20b%5Ctimes%20h)
![Volume=9\times 4\times x](https://tex.z-dn.net/?f=Volume%3D9%5Ctimes%204%5Ctimes%20x)
![Volume=36x](https://tex.z-dn.net/?f=Volume%3D36x)
Solid's surface area = Volume of solid
![72+26x=36x](https://tex.z-dn.net/?f=72%2B26x%3D36x)
![72=36x-26x](https://tex.z-dn.net/?f=72%3D36x-26x)
![72=10x](https://tex.z-dn.net/?f=72%3D10x)
Divide both sides by 10.
![7.2=x](https://tex.z-dn.net/?f=7.2%3Dx)
Therefore, the value of x is 7.2.
4x - 3(x - 2) - x
4x - 3x + 6 - x
4x - 4x + 6
6....u r correct because ur x's cancel out
(2x-4)(x+5) expand with indicated multiplication
2x^2+10x-4x-20
2x^2+6x-20