In 1969, there were 25 companies located in the research triangle. by 1970, there were 47 companies in the park. what is the percent of increase in the number of companies during this year?

Arectangle has a width of 9 units and length of 40 units. what is the length of a diognal. a. 31 unitsb. 39 unitsc. 41 units d. 49 units

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?