PLEASE HELP I DONT UNDERSTAND LOOK AT PHOTO QUESTION 9

How many temperature in biratnagar

Which math sentence can be used to determine if the triangle is a right triangle?

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?