NabzDayer5214
19.07.2019 •
Mathematics
95 points. quickly, but accurately .
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Ответ:
An open dot means that the point is not included in the function.
f(-2) is asking you for the y-value when x = -2. Looking at the graph, there are two dots at x = -2 (dashed green line). One is open and one is closed. Only the closed point is actually included in the function. The closed point is at y = 1.
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D) 1
Ответ:
The answer is A, 28. If there were ten people to start with, then persons 1-6 would make one group, persons 2-7 would make another, persons 3-8, persons 4-9, persons 5-10, persons 1, 8, 9 10, 4, 5, etc, if you go through all ten numbers and put them all in groups, the number og groups made would be twenty-eight