Alice and Rual are baking cookies together. They need $$ 3
4​cup of flour and $$
1
2​cup of butter to make a dozen cookies. they have $$3
1
2​cups of flour and $$1
3
4​cups of butter. If the students have plenty of the other ingredients that they need (sugar, salt, baking soda, etc.), how many whole batches of a dozen cookies can they make?

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What is the difference between regular convex and concave polygons

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

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