What is 90 divided by 9 + 72 divided by 12

What is the factored form of the following expressions? d^2 – 13d + 36

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.