Wouldn’t you add both of the equations together and set them equal to 180 and whatever you get for x just plug back in to find the values of the angles??
5+9=14 in numerical expression
(-1,-9) because if we substituted 1 into x y would be 9 and if we substituted 1/2 into x y would be 3 but if we substituted -1 into x y would be 1/9 so therefore that value is incorrect
It is 4t because you have to minus it and then you get 4t
The square root of 64(which is 8)is a rational number as it can be written as a fraction.