At a carnival the tea cups spin at a rate of 10 rpm how long will it take for the tea cups to spin 43.5 times

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

10% of 1,900,000. show me how you got the answer

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean