1. 20.1%
You find this by subtracting the measured and the actual and then divide that by the actual. Then, multiply that by 100 to get the percent.
Y t plus 2 but first do parantheses
Okay so to find this you need an equation to find x. for you have 5x+x=180
6x=180 divide both sides by 6 you get x=30 now you can double check. one angle is 30 and one is 5*30 see if you get 180 you 30+5*30 5*30=150+30=180 so it's correct. so x=30 so to find the smallest angles could be x=180-5x
i hope this helped you have an amazing day!!
Answer:
multiply first equation by 2 in order to have same amount of x in both equations
2x-4y=6 now subtract equations
y=3 thus x=9