Acircular swimming pool has a radius of 28 ft. there is a path all around the pool that is 4 ft wide. a fence is going to be built around the outside edge of the pool path. about how many feet of fencing are needed to go around the pool path?

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The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years