How many parts is each square unit in the 3-by-3 “chopped” into?

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?