Wetlands offer a diversity of benefits. they provide a habitat for wildlife, spawning grounds for u. s. commercial fish, and renewable timber resources. in the last 200 years, the united states has lost more than half its wetlands. environmental almanac gives the percentage of wetlands lost in each state in the last 200 years. for 30 of the lower 48 states, the percentage loss of wetlands per state is as follows. 89 27 35 38 56 35 50 67 52 91 52 48 73 27 46 36 50 81 46 60 46 50 87 31 54 49 39 9 24 35 make a stem-and-leaf display of these data. how are the percentages distributed? is the distribution skewed? are there any gaps?

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

An annual marathon covers a route that has a distance of approximately 26 miles. winning times for this marathon are all over 2 hours. the following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each. earlier period 14 12 15 22 13 10 19 13 9 14 20 18 16 20 23 12 18 17 6 13 recent period 7 11 7 14 8 9 11 14 8 7 9 8 7 9 9 9 9 8 10 8 (a) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks. for more details, view how to split a stem.) minutes beyond 2 hours earlier period 0 1 2 (b) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the recent period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks.) minutes beyond 2 hours recent period (c) compare the two distributions. how many times under 15 minutes are in each distribution