Find O Round to the nearest hundredth

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

Evaluate the expression. (9 + 5)(3 + 2)0