Find the missing angle for 51

All per-unit concepts rely on ratios, meaning, to provide a type of measurement

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2