017 5.0 points
an oxygen molecule at 25°c has a speed of
about 854 meters per second. express this
speed in miles/hour. (1 mi = 5280 ft)
1. 0.000523 miles/hour
2. 12300 miles/hour
3. 307 miles/hour
4. 19100 miles/hour
5. 0.0001 17 miles/hour
6. 0.531 miles/hour

What is the rotational symmetry of a wheel

Carla was trying to decide what to do saturday evening. she has $100 available to spend for the evening. she has narrowed her choices down to these events: braves game, a concert of an artist she likes, or the georgia aquarium. admission to the braves game is $25, hot dogs cost $10, sodas cost $5. the concert costs $25 for admission, $20 for a souvernir t-shirt, and $10 for a soda. the georgia aquarium has the show of a lifetime with an all you can eat and drink that costs $100. carla does not want to take any driving chances, so in addition to the cost of the aquarium, she will also need to pay for her uber/lyft, which is $15 each way. which option should carla choose if she wants to spend the least? based on that choice, what then is carla's oppotunity cost? fully explain your answer in at least one paragraph.

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.