An airline allows each passenger 42 kilogram of luggage. carl has to lower the weight of his suitcase by 25% to stay within the limit. how much did the suitcase originally weigh

Problem number 26 of the rhind papyrus says: find a quantity such that when it is added to of itself the result is a 15. the modern day equation that models this problem is x + x = 15. what is the solution to the equation? x = 10 x = 12 x = 15 x = 30

How many degrees are there in the central angles in a circle

Which of these figures must be a rectangle?