laceybudd9472
23.11.2020 •
Mathematics
Government limits for sea water are based on an iodine 131 value of 40 Bq/L and a cesium 137 value of 90 Bq/L. On April 17, 2011, sea water contamination levels based on samples 20 km from the site had iodine 131 and cesium 137 concentrations of 161 Bq/L and 186 Bq/L, respectively. How much time must pass before the sea water sample reaches the government's limits?
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Ответ:
-5(-2a + 5)
Step-by-step explanation:
10a - 25
-5(-2a + 5)