Rounded to three decimal places, what is the value or r for this set of data?
x=8,15,3,7,2,14,20
y=50,75,23,31,18,68,98
1)0.870
2)0.897
3)0.978
4)0.989

What is the total area of the figure?

"which statement is necessarily true if bd is an altitude to the hypotenuse of right ? abc? a.) ? adb? ? bdc b.) ? adb~? bdc c.) abbc=acbd d.) ? bac? ? bdc"

The length of time it takes to find a parking space at 9 a.m. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes. find the probability that it takes at least 8 minutes to find a parking space. (round your answer to four decimal places.)