A survey indicates that shoppers spend an average of 22 minutes with a standard deviation of 8 minutes in your store and that these times are normally distributed. Find the probability that a randomly selected shopper will spend less than 20 minutes in the store.

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?