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Waves that must travel through a medium are A. mechanical. B. electromagnetic. C. frequency.
asked
Oct 5, 2017
Biology
high-school
1
answer
2
votes
84.5k
views
A group of 18 people ordered soup and sandwiches for lunch. Each person in the group had either one soup or one sandwich. The sandwiches cost $7.75 each and the soups cost $4.50 each. If the total cost
asked
May 6, 2015
Mathematics
high-school
1
answer
5
votes
62.3k
views
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