What is the Sum of (2n^−5n−6)+(−n^2−3n+11)?

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Which expression is rational? 6. , square root two, square root 14, square root 49

Asoftball team played ten games, scoring 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 runs. they lost by one run in exactly five games. in each of their other games, they scored twice as many runs as their opponent. how many total runs did their opponents score?