4g3+8g-4g3+2g2 simplify

What is the rotational symmetry of a wheel

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

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers