Prove ⊢(x)(Fx ⊃ Gx) ⊃ (x)(¬Gx ⊃ ¬Fx)

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?

Solve for b. ab + c= d b= a + old ob=allc-ch b= (d-c/a