Answer:
![\Delta s \approx 334.545\,m](https://tex.z-dn.net/?f=%5CDelta%20s%20%5Capprox%20334.545%5C%2Cm)
Step-by-step explanation:
Let assume that Earth is a sphere, the following trigonometric diagram is constructed and presented below. The central angle is given by this inverse trigonometric equation:
![\theta = 2\cdot \cos^{-1} \left(\frac{r}{r+h} \right)](https://tex.z-dn.net/?f=%5Ctheta%20%3D%202%5Ccdot%20%5Ccos%5E%7B-1%7D%20%5Cleft%28%5Cfrac%7Br%7D%7Br%2Bh%7D%20%5Cright%29)
![\theta = 2\cdot \cos^{-1}\left(\frac{4000\,mi}{4000\,mi+3.5\,mi} \right)](https://tex.z-dn.net/?f=%5Ctheta%20%3D%202%5Ccdot%20%5Ccos%5E%7B-1%7D%5Cleft%28%5Cfrac%7B4000%5C%2Cmi%7D%7B4000%5C%2Cmi%2B3.5%5C%2Cmi%7D%20%5Cright%29)
![\theta = 4.792^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%20%3D%204.792%5E%7B%5Ccirc%7D)
The distance of the portion of Earth that can be seen is:
![\Delta s = \frac{4.792^{\circ}}{360^{\circ}}\cdot (2\pi)\cdot (4000\,mi)](https://tex.z-dn.net/?f=%5CDelta%20s%20%3D%20%5Cfrac%7B4.792%5E%7B%5Ccirc%7D%7D%7B360%5E%7B%5Ccirc%7D%7D%5Ccdot%20%282%5Cpi%29%5Ccdot%20%284000%5C%2Cmi%29)
![\Delta s \approx 334.545\,m](https://tex.z-dn.net/?f=%5CDelta%20s%20%5Capprox%20334.545%5C%2Cm)
Answer:
3= 25 4= 20 25= 5
Step-by-step explanation:
its a pattern. the top goes up by ones and the bottom goes up by fives.
Answer: ![11\frac{2}{15}](https://tex.z-dn.net/?f=11%5Cfrac%7B2%7D%7B15%7D)
Step-by-step explanation:
What you are trying to do is isolate the variable x. For you to do that you have to first simplify the left side of the equation and then you solve for x.
Answer:
y = 2x^2 − 4x + 5
y = 2(x^2 − 2x) + 5
y = 2(x^2 − 2x + 1 - 1) + 5
y = 2(x^2 − 2x + 1) + 5 - 2
y = 2(x - 1)^2 + 3
x = 1 is the axis of symmetry.
Do you agree?