Mark wants to use coordinate proof to determine whether or not the diagonals of a square are congruent. Which coordinates could Mark use to represent the square?

What is the simplified expression for 6(2(y+x))

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?