Answers by Alaa Masoud
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Answers by Alaa Masoud

Answers by Alaa Masoud
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How long can a little girl hold her breath???
answered Sep 5, 2018
4 votes
1.0k views
Suppose you have a rock that, when it solidifies, contains 1 microgram of a radioactive isotope. how much of this isotope remains after five half-lives?
answered May 16, 2018
1 vote
29.3k views
How many different proteins, each composed of 8 amino acids, can be constructed using the 20 different amino acids found in proteins?
answered Jun 28, 2017
0 votes
69.2k views
About how many people did africa lose to the atlantic slave trade?
answered May 24, 2017
6 votes
188k views
Find the standard form of the equation of the parabola with a focus at (0, -2) and a directrix at y = 2.
answered Feb 15, 2017
2 votes
73.5k views
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