ABCDE and FGHIJ are regular pentagons with FGHIJ the larger of the two. One side of pentagon ABCDE is 4 units long. If the ratio of the perimeters of the 2 pentagons is 2:3, how many units long is a side of pentagon FGHIJ ?

Which rotation about its center will carry a regular hexagon onto itself

Explain how you can show five less than a number using an algebraic expression

Renee hiked for 6 3/4 miles. after resting, renee hiked back along the same route for 5 1/4 miles. how many more miles does renee need to hike to return to the place where she started? represent your answer as a simplified mixed number, if necessary.