Hey there ,. Anyone Know How to solve Differential equation??​

Will gve pints stars and brainliest

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Which system of linear inequalities is represented by the graph?