Answer:C
Step-by-step explanation:
keeping proportional and thats the only answer where the difference is still $2.25
7^2x4 = n^8
7^8 = n^8
n = 7
Answer:
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Answer:
x ∉ R
Step-by-step explanation:
x² = - 21
if x² < 0 => x ∉ R