Acircular lampshade with a diameter of 14 inches has a length of wire that goes around it exactly one time. how many inches of wire are needed to go around the lampshade exactly one time?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?