Answer:
x=-2/3
Step-by-step explanation:
(5x+10)=(2-7x)
5x+10=2-7x
5x+7x=2-10
12x=-8
x=-8/12
x=-2/3
2nd one if I’m not mistaken
Answer:
i need some bleach for my poor brain
Step-by-step explanation:
2.295 that’s what I think! :)
Answer:
301.54 cubic centimeters.
Step-by-step explanation:
Given:
The top of each fence post is a square pyramid.
The side length of the base of the fence top is 10.1 cm.
The height of the fence is 8.868 cm.
Question asked:
What is the volume of the post top ?
Solution:
First of all we will find base area of the fence then volume of post top (square pyramid)
Side length = 10.1 cm
As we know:
![Area\ of\ square=(Side)^{2}](https://tex.z-dn.net/?f=Area%5C%20of%5C%20square%3D%28Side%29%5E%7B2%7D)
![=(10.1)^{2} =102.01\ cm^{2}](https://tex.z-dn.net/?f=%3D%2810.1%29%5E%7B2%7D%20%3D102.01%5C%20cm%5E%7B2%7D)
Now
![Volume\ of\ square\ pyramid=\frac{1}{3} \times base\ area\times height](https://tex.z-dn.net/?f=Volume%5C%20of%5C%20square%5C%20pyramid%3D%5Cfrac%7B1%7D%7B3%7D%20%5Ctimes%20base%5C%20area%5Ctimes%20height)
![=\frac{1}{3} \times102.01\times8.868=\frac{904.62}{3} =301.54\ cm^{3}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B1%7D%7B3%7D%20%5Ctimes102.01%5Ctimes8.868%3D%5Cfrac%7B904.62%7D%7B3%7D%20%3D301.54%5C%20cm%5E%7B3%7D)
Thus, volume of the post top is 301.54 cubic centimeters.