There are 130 red, blue and green marbles in a bag. the ratio of red to blue to green is 5: 3: 2 respectively. how much marbles in the bag are blue?

Part of the total score for each program is the sum of five program component scores. on the free program, the sum of these five program component scores is multiplied by a factor of 2.0. yuzuru hanyu, of japan, earned scores of 9.07, 8.96, 8.89, 9.21, and 9.36 for the program components portion of his free program. how many total points did he receive for this portion?

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?