brett has pieces of steel that are 8 in. and 12 in. long. He wants to weld the peices together with a third piece of steel o make a triangular frame. What is the range of lengths he can use for the third piece?

Given: ac and db are diameters. m∠3=

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?