Answer:
![x=-345](https://tex.z-dn.net/?f=x%3D-345)
Step-by-step explanation:
![2.3+0.02\left(x+20\right)-4.8=-9](https://tex.z-dn.net/?f=2.3%2B0.02%5Cleft%28x%2B20%5Cright%29-4.8%3D-9)
![\mathrm{Multiply\:both\:sides\:by\:}100](https://tex.z-dn.net/?f=%5Cmathrm%7BMultiply%5C%3Aboth%5C%3Asides%5C%3Aby%5C%3A%7D100)
![2.3\cdot \:100+0.02\left(x+20\right)\cdot \:100-4.8\cdot \:100=-9\cdot \:100](https://tex.z-dn.net/?f=2.3%5Ccdot%20%5C%3A100%2B0.02%5Cleft%28x%2B20%5Cright%29%5Ccdot%20%5C%3A100-4.8%5Ccdot%20%5C%3A100%3D-9%5Ccdot%20%5C%3A100)
![230+2\left(x+20\right)-480=-900](https://tex.z-dn.net/?f=230%2B2%5Cleft%28x%2B20%5Cright%29-480%3D-900)
![\mathrm{Subtract\:}230-480\mathrm{\:from\:both\:sides}](https://tex.z-dn.net/?f=%5Cmathrm%7BSubtract%5C%3A%7D230-480%5Cmathrm%7B%5C%3Afrom%5C%3Aboth%5C%3Asides%7D)
![230+2\left(x+20\right)-480-\left(230-480\right)=-900-\left(230-480\right)](https://tex.z-dn.net/?f=230%2B2%5Cleft%28x%2B20%5Cright%29-480-%5Cleft%28230-480%5Cright%29%3D-900-%5Cleft%28230-480%5Cright%29)
![2\left(x+20\right)=-650](https://tex.z-dn.net/?f=2%5Cleft%28x%2B20%5Cright%29%3D-650)
![\mathrm{Divide\:both\:sides\:by\:}2](https://tex.z-dn.net/?f=%5Cmathrm%7BDivide%5C%3Aboth%5C%3Asides%5C%3Aby%5C%3A%7D2)
![\frac{2\left(x+20\right)}{2}=\frac{-650}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B2%5Cleft%28x%2B20%5Cright%29%7D%7B2%7D%3D%5Cfrac%7B-650%7D%7B2%7D)
![x+20=-325](https://tex.z-dn.net/?f=x%2B20%3D-325)
![\mathrm{Subtract\:}20\mathrm{\:from\:both\:sides}](https://tex.z-dn.net/?f=%5Cmathrm%7BSubtract%5C%3A%7D20%5Cmathrm%7B%5C%3Afrom%5C%3Aboth%5C%3Asides%7D)
![x+20-20=-325-20](https://tex.z-dn.net/?f=x%2B20-20%3D-325-20)
![\bold{x=-345}](https://tex.z-dn.net/?f=%5Cbold%7Bx%3D-345%7D)
Is there any other part of this question that I am missing? It would be great if you could include more information on the problem.
Thank you!
We have to find the period of the parent cosine function and the period of the function showed on the graph.
Period = 2π / B, where B is the coefficient of x - term.
1. For the function: y = cos x, B = 1
Period = 2 π / 1 = 2 π = 360°.
2. For the graphed function ( from the picture ):
Period = 6 π = 1,080°
Answer:
(x+4)( 8x^{2}+1)
Step-by-step explanation:
:)
-20a divided by 12b would be -1.6