Which path is lorger path a or path b

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work:

Felix wrote several equations and determined that only one of the equations has no solution. which of these equations has no solution?

3/4 + p = 1/2? i’m not sure how to solve it