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dashavasilisk
12.12.2020 •
Mathematics
I NEED HELP ASAP IT IS DUE AT MIDNIGHT PLEASEEEEEE
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Ответ:
A = -2.2
B = -1.7
C = 1.87
D = 19.97
Step-by-step explanation:
A = 7.4 - 9.6 = -2.2
B = -2.2 + 0.5 = -1.7
C = -1.1(-1.7) = 1.87
D = 18.1 + 1.87 = 19.97
Ответ:
Second option is correct.
Step-by-step explanation:
Since we have given that
Number of sixth graders students = 160
Number of seventh graders students = 180
Number of eighth graders students = 140
If 9 seventh graders were part of a random sample of the population chosen to participate in a survey.
Let Number of sixth graders should be chosen be 'x'.
Since there will be direct proportion .
Hence, Second option is correct.