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Please help me!!!!!!

Please Help Me class=

Sagot :

Answer:

137.9

Step-by-step explanation:

look at the decimal places, there is only numbers in the 10th place so there should be only 1 number after the decimal

so the answer to ? is 137.9

look in here if you dont understand what I said: https://www.dummies.com/education/science/chemistry/arithmetic-significant-figures/