X + 3 = 2x +5
-x -5 = -x - 5
x = -2
Answer:
Volume of the cone = ![1492.75\, cm^2\\](https://tex.z-dn.net/?f=1492.75%5C%2C%20cm%5E2%5C%5C)
Step-by-step explanation:
Height of the cone = ![6.6\,cm](https://tex.z-dn.net/?f=6.6%5C%2Ccm)
Radius of the base= ![14.7\,cm](https://tex.z-dn.net/?f=14.7%5C%2Ccm)
Volume of the cone is:
![=\pi \times r^2 \times \dfrac{h}{3}](https://tex.z-dn.net/?f=%3D%5Cpi%20%5Ctimes%20r%5E2%20%5Ctimes%20%5Cdfrac%7Bh%7D%7B3%7D)
As, ![\pi =\dfrac{22}{7}=3.14](https://tex.z-dn.net/?f=%5Cpi%20%3D%5Cdfrac%7B22%7D%7B7%7D%3D3.14)
Volume is:
![=3.14\times (14.7\times 14.7)\times \dfrac{6.6}{3 } \\\\=3.14\times 216.09 \times 2.2\\\\=3.14\times 475.40\\\\=1492.75\, cm^2\\](https://tex.z-dn.net/?f=%3D3.14%5Ctimes%20%2814.7%5Ctimes%2014.7%29%5Ctimes%20%5Cdfrac%7B6.6%7D%7B3%20%7D%20%5C%5C%5C%5C%3D3.14%5Ctimes%20216.09%20%5Ctimes%202.2%5C%5C%5C%5C%3D3.14%5Ctimes%20475.40%5C%5C%5C%5C%3D1492.75%5C%2C%20cm%5E2%5C%5C)
Volume of the cone is :
Lowest price- health styles
Highest price- able bodies
Before jumping into doing this problem, it is important to look at all the information's that have been made available in the question. Based on those given conditions the answer to the problem can be easily deduced.
Let us assume the number of friends Sumalee has = x
Then
2x + 8 = 40
2x = 40 -8
2x = 32
x = 32/2
x = 16
So Sumalee has 16 friends. There are numerous ways to get to the answer that is required to be found. This is the easiest and the shortest method. Hope i helped you.
Consider,
![(z-5)(z+3)](https://tex.z-dn.net/?f=%28z-5%29%28z%2B3%29)
. Let's say
![a = z-5](https://tex.z-dn.net/?f=a%20%3D%20z-5)
then the problem reduces to
![a(z+3)=za+3a](https://tex.z-dn.net/?f=a%28z%2B3%29%3Dza%2B3a)
. (Do you understand this step?)
So then replacing a again with our definition we get,
![z(z-5)+3(z-5)=z^2-5z+3z-15=z^2-2z-15](https://tex.z-dn.net/?f=z%28z-5%29%2B3%28z-5%29%3Dz%5E2-5z%2B3z-15%3Dz%5E2-2z-15)
.