Ethan ordered 4 sub sandwiches for a party. each 1/2 sandwich is one serving. dose he have enough that serve seven friends? how much is left over or how much more is needed? explain

Yes he has enough there is 8 halves so Ethan will have 1 half left over

With what problem can you explain your question

In  mathematics, the  pythagorean theorem, also known as  pythagoras' theorem, is a fundamental relation in  euclidean geometryamong the three sides of a  right triangle. it states that the square of the  hypotenuse  (the side opposite the  right angle) is equal to the sum of the squares of the  other two sides. the  theorem  can be written as an  equationrelating the lengths of the sides  a,  b  and  c, often called the "pythagorean equation".