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A measure of the strength of acid rain can be given using _____. an acid a base a pH scale all of the above
answered
Sep 21, 2017
Chemistry
middle-school
5
votes
212k
views
How do I solve this problem ?4x+7y=42 when X=9
answered
Jul 28, 2017
Mathematics
high-school
4
votes
60.5k
views
If a board game was originally $25 and its on sale for$18, what is the percent of the discount?
answered
Apr 16, 2017
Mathematics
middle-school
5
votes
231k
views
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