Which statements are true? Select each correct answer.

1. All triangles have one right angle.
2. Only some triangles are polygons.
3 .All triangles have 3 angles.
4. All triangles have 3 straight sides.
5 All triangles are plane figures.

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

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?

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?