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What is the ratio 15 : 75 in lowest terms? 1 : 5 2 : 5 1 : 4 3 : 5
answered
Sep 10, 2017
Mathematics
middle-school
3
votes
159k
views
Choose the best answer that makes the sentence correct. A membrane that allows only some materials to move in and out of the cell is _____. A. permeable B. semipermeable C. rigid D. bilayered
answered
Jun 19, 2017
Biology
high-school
3
votes
232k
views
The later date held for the Exodus is: 1250 b. c. 3150 b. C 2150 b. c. 1525 b. c.
answered
Feb 22, 2017
History
high-school
5
votes
159k
views
the radioisotope radon-222 has a half-life of 3.8 days. How much of a 73.9-gram sample of radon-222 would be left after approximately 23 days?
answered
Feb 14, 2017
Chemistry
high-school
6
votes
157k
views
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