ejhoff4347
25.01.2021 •
Mathematics
Select all the expressions that are equivalent to 9+ 7X minus 3Y A 9+ 7X plus3y B 9 minus 7X minus 3Y. C. 9minus 7X plus 3Y. D. 9 plus 7X plus negative 3Y E. 9 minus negative 7X minus 3Y
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Ответ:
Step-by-step explanation:F=ma
1st ball
15=m*3
15/3=m
m=5kg
2nd ball
f=ma
15=m*4
m=15/4
=3.7