What is 55 x 10 to the power of 4 in scientific notation

What is the least common multiple of 6 and 17?

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

What is the surface area of the sphere?