21/25, 4.37, 5, 5.844, 117/20
Answer:
9.3 hours
Step-by-step explanation:
Given
![y = 2.89\sin(0.0145x-1.40) + 10.99.](https://tex.z-dn.net/?f=y%20%3D%202.89%5Csin%280.0145x-1.40%29%20%2B%2010.99.)
Required
Hours of sunlight on Feb 21, 2013
First, calculate the number of days from Jan 1, 2013 to Feb 21, 2013
![days = 52](https://tex.z-dn.net/?f=days%20%3D%2052)
So:
![x = 52](https://tex.z-dn.net/?f=x%20%3D%2052)
So, we have:
![y = 2.89\sin(0.0145x-1.40) + 10.99.](https://tex.z-dn.net/?f=y%20%3D%202.89%5Csin%280.0145x-1.40%29%20%2B%2010.99.)
![y = 2.89\sin(0.0145*52-1.40) + 10.99.](https://tex.z-dn.net/?f=y%20%3D%202.89%5Csin%280.0145%2A52-1.40%29%20%2B%2010.99.)
![y = 2.89\sin(0.754-1.40) + 10.99.](https://tex.z-dn.net/?f=y%20%3D%202.89%5Csin%280.754-1.40%29%20%2B%2010.99.)
![y = 2.89\sin(-0.646) + 10.99.](https://tex.z-dn.net/?f=y%20%3D%202.89%5Csin%28-0.646%29%20%2B%2010.99.)
![y = 2.89*-0.6020 + 10.99.](https://tex.z-dn.net/?f=y%20%3D%202.89%2A-0.6020%20%2B%2010.99.)
![y = -1.740 + 10.99.](https://tex.z-dn.net/?f=y%20%3D%20-1.740%20%2B%2010.99.)
![y = 9.25](https://tex.z-dn.net/?f=y%20%3D%209.25)
<em></em>
<em> --- approximated</em>
Answer:
650% percent
Step-by-step explanation:
The slope of this line is 1/3
1 can go into anything so that is the mystery number sorry if not right first time on here