judywilkerson1114
17.02.2021 •
Mathematics
Pleasee help wit this
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Answers on questions: Mathematics
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Ответ:
Step-by-step explanation:
f(-9)=2(-9)²+5(-9)+20
= 162-45+20
= 137
Ответ:
137
Step-by-step explanation:
f(-9) = 2(-9)^2 + 5(-9) + 20
= 162 - 45 + 20
= 137
Ответ:
18/21
Step-by-step explanation:
6/21 +12/21