Sharon suspects that her brother's penny is unfair. she flips it 50 times and heads comes up 40 times. based on these trials, the probability that a flip of this coin comes up heads is

80% of the time it will be heads, because 40/50 it's heads, and if you times both by 2 you get 80/100 = 80%

It is the top one. the answer is -7. that is smallest

One shot. if 60% of 10 is 6, then what is 70%? we know it would be seven (since 60% is mathematically 60/100, or 6/10, then 70% is 70/100, or 7/10) but we can check anyway using ratios: 6 : 60% = x : 70%*inverse multiplicationx * 60% = 6 * 70%*divide both sides by 60%x = (6 * 70%) / 60%x = 7and since he has made 6 shots already, he would need just one more to get 7 shots or 70%. if the explanation is too confusing, comment and i will try to