If 1 inch is equivalent to 2.54 cm, how many centimeters are there in 5 inches ?

Here is another math questions. i will keep asking different questions. 4^2x=6

Abag contains 5 red marbles , 6 blue marbles and 4 green marbles. susie selects a marble and returns it to the bag before selecting another marble. if susie selects a red marble 6 out of 20 times, what is the experimental probability that the next marble she selects will be a red marble ?

25e² + n 4= 20edon't know what to do so