Find the measure of angle dbc if the measure of angle abc =5x+3 and angle abd is congruent to angle dbc

And explain how you got it so i can understand future problems : 3

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.