svarner2001
16.12.2020 •
Mathematics
A scientist begins an experiment with 20.25 milliliters of a chemical. She adds 0.75 milliliter of water to the chemical every 10 minutes, starting at 1:30 P.M. A. How many milliliters of water have been added to the chemical by 3:20 P.M.?
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Ответ:
8.25 BRAINLIEST PLS
Step-by-step explanation:
Ответ:
First, find angle ECD using tan^-1(6/4), we get angle as 56.31
Now by proportionate, angle ECD and angle EBA are equal.
Hence you can use tan to find AB i.e, AB = 18/tan(56.31)= 12
Therefore, AB = 12