How to do this ? can anyone me ?

What is the measure of the smallest angle in the diagram? 15 29 32 45

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Timmy uses 1 1 2 cups of sugar for every 2 gallons of lemonade he makes. how many cups of sugar would timmy use if he makes 13 gallons of lemonade?