Well it depends on the pen
The line crosses the y axis
Make one of the variables drop out.
I'd go for the y since it's easiest in this problem.
Time the top equation by -1.
This changes the system to:
![2x + - y = 1](https://tex.z-dn.net/?f=2x%20%2B%20-%20y%20%3D%201)
![- 4x + y = - 1](https://tex.z-dn.net/?f=%20-%204x%20%2B%20y%20%3D%20-%201)
Add the equations.
![2x + - 4x = - 2x](https://tex.z-dn.net/?f=2x%20%2B%20-%204x%20%3D%20-%202x)
![- y + y = 0](https://tex.z-dn.net/?f=%20-%20y%20%2B%20y%20%3D%200)
![1 + - 1 = 0](https://tex.z-dn.net/?f=1%20%2B%20-%201%20%3D%200)
The equation would be:
![- 2x + 0 = 0](https://tex.z-dn.net/?f=%20-%202x%20%2B%200%20%3D%200)
Or simply:
![- 2x = 0](https://tex.z-dn.net/?f=%20-%202x%20%3D%200)
Solve for x by dividing.
![x = 0 \div - 2](https://tex.z-dn.net/?f=x%20%3D%200%20%5Cdiv%20-%202)
![x = 0](https://tex.z-dn.net/?f=x%20%3D%200)
Then, plug x into one of the original equations to find y.
I'm going to use the first one since the numbers are smaller, but you CAN use either.
![- 2(0) + y = 1](https://tex.z-dn.net/?f=%20-%202%280%29%20%2B%20y%20%3D%201)
![0 + y = 1](https://tex.z-dn.net/?f=0%20%2B%20y%20%3D%201)
![y = 1](https://tex.z-dn.net/?f=y%20%3D%201)
Put these into an ordered pair.
(0,1)
That is your answer.
Hope this helped!
:)
c^2 = a^2 + b^2
looking for C the hypotenuse
a = 35
b = 12
These are the sides
c^2 = 35^2 + 12^2
c^2 = 1225 + 144
c^2 = 1369
Then take the square root of both sides to get C
C = 37
Answer:
4:5
Step-by-step explanation:
Divide both sides by seven since seven is the greatest common factor.