Answer:
Step-by-step explanation:
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Answer:
±square root 20
Step-by-step explanation:
x²= 20
x= square root 20
x= 2 square root 5
x≈ 4.4721
Answer:
The first one
Step-by-step explanation:
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Answer:
0.0048 or 0.48%
Step-by-step explanation:
Please see the attached files for details.