Ihave all the side measurements for a triangle but how do you find the angle measurements of it?

Find the nonpermissible replacement for binthis expression.b2/5b +5

What’s 8y+48 and factor each expression completely

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.