I need answer not links​

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Ialready asked this but i never got an answer. will give a high rating and perhaps brainliest. choose the linear inequality that describes the graph. the gray area represents the shaded region. y ≤ –4x – 2 y > –4x – 2 y ≥ –4x – 2 y < 4x – 2

Find the domain and range of the following function f(x) = 51x - 21+ 4