well that all depends on luck because you'll never land the exact same numbers again unless you get extremely lucky
Answer:
![\large\boxed{x=-2\ and\ y=-4.5}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7Bx%3D-2%5C%20and%5C%20y%3D-4.5%7D)
Step-by-step explanation:
![\left\{\begin{array}{ccc}x=2y+7&(1)\\3x-2y=3&(2)\end{array}\right\\\\\\\text{Substitute (1) to (2):}\\\\3(2y+7)-2y=3\qquad\text{use distributive property}\\(3)(2y)+(3)(7)-2y=3\\6y+21-2y=3\qquad\text{subtract 21 from both sides}\\6y-2y=-18\\4y=-18\qquad\text{divide both sides by 4}\\\boxed{y=-4.5}\\\\\text{substitute the value of}\ y\ \text{to (1):}\\\\x=2(-4.5)+7\\x=-9+7\\\boxed{x=-2}](https://tex.z-dn.net/?f=%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7Dx%3D2y%2B7%26%281%29%5C%5C3x-2y%3D3%26%282%29%5Cend%7Barray%7D%5Cright%5C%5C%5C%5C%5C%5C%5Ctext%7BSubstitute%20%281%29%20to%20%282%29%3A%7D%5C%5C%5C%5C3%282y%2B7%29-2y%3D3%5Cqquad%5Ctext%7Buse%20distributive%20property%7D%5C%5C%283%29%282y%29%2B%283%29%287%29-2y%3D3%5C%5C6y%2B21-2y%3D3%5Cqquad%5Ctext%7Bsubtract%2021%20from%20both%20sides%7D%5C%5C6y-2y%3D-18%5C%5C4y%3D-18%5Cqquad%5Ctext%7Bdivide%20both%20sides%20by%204%7D%5C%5C%5Cboxed%7By%3D-4.5%7D%5C%5C%5C%5C%5Ctext%7Bsubstitute%20the%20value%20of%7D%5C%20y%5C%20%5Ctext%7Bto%20%281%29%3A%7D%5C%5C%5C%5Cx%3D2%28-4.5%29%2B7%5C%5Cx%3D-9%2B7%5C%5C%5Cboxed%7Bx%3D-2%7D)
Let’s call the rise X and the span Y
The pitch is the ratio of the rise (X) to half the span (Y)
So the pitch = X/(1/2Y)
Which equals 8 / [(1/2) x 30]
Which equals 8/15