Answer:
im not sure were you got this but are there any pictures?
Step-by-step explanation:
The given values lie on a line with slope
... m = (975 -725)/(30 -20) = 250/10 = 25
The initial value shown gives the y-intercept, so the length can be calculated using the equation
... y = 25x +225
_____
The length after 86 days will be
... y = 25·86 +225 = 2375 . . . feet
Answer:
![x = 0.175\cdot (1-\cos 4\cdot \theta)](https://tex.z-dn.net/?f=x%20%3D%200.175%5Ccdot%20%281-%5Ccos%204%5Ccdot%20%5Ctheta%29)
Step-by-step explanation:
Let use the following trigonometric identities:
![\sin^{2}\theta = \frac{1-\cos 2\cdot \theta}{2} \\\cos^{2}\theta = \frac{1+\cos 2\cdot \theta}{2}](https://tex.z-dn.net/?f=%5Csin%5E%7B2%7D%5Ctheta%20%3D%20%5Cfrac%7B1-%5Ccos%202%5Ccdot%20%5Ctheta%7D%7B2%7D%20%5C%5C%5Ccos%5E%7B2%7D%5Ctheta%20%3D%20%5Cfrac%7B1%2B%5Ccos%202%5Ccdot%20%5Ctheta%7D%7B2%7D)
Then, the equation is simplified by substituting its components:
![x = 1.40\cdot \left(\frac{1-\cos 2\cdot \theta}{2} \right)\cdot \left(\frac{1+\cos 2\cdot \theta}{2} \right)](https://tex.z-dn.net/?f=x%20%3D%201.40%5Ccdot%20%5Cleft%28%5Cfrac%7B1-%5Ccos%202%5Ccdot%20%5Ctheta%7D%7B2%7D%20%20%5Cright%29%5Ccdot%20%5Cleft%28%5Cfrac%7B1%2B%5Ccos%202%5Ccdot%20%5Ctheta%7D%7B2%7D%20%5Cright%29)
![x = 0.35\cdot (1-\cos^{2}2\cdot \theta)](https://tex.z-dn.net/?f=x%20%3D%200.35%5Ccdot%20%281-%5Ccos%5E%7B2%7D2%5Ccdot%20%5Ctheta%29)
![x = 0.35\cdot \sin^{2}2\cdot \theta](https://tex.z-dn.net/?f=x%20%3D%200.35%5Ccdot%20%5Csin%5E%7B2%7D2%5Ccdot%20%5Ctheta)
![x = 0.35\cdot \left(\frac{1-\cos 4\cdot \theta}{2} \right)](https://tex.z-dn.net/?f=x%20%3D%200.35%5Ccdot%20%5Cleft%28%5Cfrac%7B1-%5Ccos%204%5Ccdot%20%5Ctheta%7D%7B2%7D%20%20%5Cright%29)
![x = 0.175\cdot (1-\cos 4\cdot \theta)](https://tex.z-dn.net/?f=x%20%3D%200.175%5Ccdot%20%281-%5Ccos%204%5Ccdot%20%5Ctheta%29)
-3(x+4)=-6
-3x-12=-6
-3x=6
X=-2
Answer:
x intercept is -3.
(if im wrong then its 3 but im pretty sure im correct! :D)
Step-by-step explanation:
Ask if you want step-by-step. :)
hope this helped!