Sam has 8 paintings to display in his gallery. he can place 4 of them in the front window. in how many ways can he arrange 4 paintings in the front window? 4880 3600 1680 5400

What is the rotational symmetry of a wheel

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

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?