If all the sides of a triangle get 2 times as big, how much does the area change?

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.

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2