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papoose10and11
23.11.2020 •
Mathematics
URGENT PLS HELP!! If 14 g of radioactive substance are present initially and 8 yr later only 7 g remain , how much of the substance will be present after 19 yr?
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Ответ:
none again
Step-by-step explanation:
7/8=0.875
19*0.875=16.625
14-16.625=-2.625
none
Ответ:
could i have heart and branliest
Step-by-step explanation: