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umka21 [38]
3 years ago
15

translate the following into interval notation: "The union of all numbers greater than eight, and less than or equal to negative

four".
Mathematics
1 answer:
Anarel [89]3 years ago
5 0
() is for <>
[] is for ≤≥


greater than 8 means
x>8 or
8 to infinity not counting 8 or
(8,∞)

less than or equal to -4 is
x≤-4 or
from -∞ to -4
or
(-∞,-4]

the infinity has a () sign since you cannot equal infinity, you can approach it

U is unity so

(-∞,-4] U (8,∞)
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