ED is a mid segment for this triangle solve for x I will give a brainless for a correct answer and explained well :)

Solve the system of equations. y= 2x y= x^2 - 15

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

What is the total surface area of this square pyramid?