if it snows tomorrow the probability is 0.8 that Jhon Will practice his cello. if it not snow tomorrow, there is only 0.6 chance that Jhon Will practice, suppose the chance of snow tomorrow 60 %

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

i think it would be 42cm

answer: it's d

step-by-step explanation: