lily is 5 inches shorter than dan . if dan is 67 inches tall , how tall is lily ? write an equation to model the situation using h for lilys height

I’m stuck on this i don’t understand.

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking