Hello, We know that the spinner has 9 numbers according to what you say. P(spinning a 4): 1/9 P(flipping heads): 1/2 P(spinning a 7): 1/9 Also, to find the compound events of this by multiplying: 1/9×1/2×1/9=1/162. As a result, the probability of the compound event. Spinning a 4, flipping heads then spinning a 7 is 1/162. Hope it help!
If bat + ball = 1.10 and the bat is a dollar more you know that the bat must cost at least 1 dollar. Divide the ten cents by two to split it evenly between the two and $1.05 is one dollar more than 5 cents