Number c divided by 0.4 is 10. what is c?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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?