Tan(angle) = opposite length/ adjacent length
Tan(50) = h/40
h = 40 x tan(50)
h = 47.67 or 47.7 feet
Answer:
Option C - Multiply the 1st equation by 2
Step-by-step explanation:
To find : Which step could be completed in order to prepare the system of equations below for the elimination method?
Solution :
1st equation:
2nd equation: ![8x+6y=15](https://tex.z-dn.net/?f=8x%2B6y%3D15)
For elimination method,
We eliminate the y by multiplying 1st equation by 2 and add by 2nd equation.
i.e. 1st equation became
Add with 2nd equation,
Substitute in (1),
![3y=\frac{175}{18}-10](https://tex.z-dn.net/?f=3y%3D%5Cfrac%7B175%7D%7B18%7D-10)
![3y=\frac{175-180}{18}](https://tex.z-dn.net/?f=3y%3D%5Cfrac%7B175-180%7D%7B18%7D)
![3y=\frac{-5}{18}](https://tex.z-dn.net/?f=3y%3D%5Cfrac%7B-5%7D%7B18%7D)
![y=\frac{-5}{54}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B-5%7D%7B54%7D)
Therefore, the step could be completed in order to prepare the system of equations below for the elimination method is option C.
-x on both sides to get
x=15