1 answer:
Answer:
i dont know the first one, but the answer to the second question is 28
Step-by-step explanation:
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Answer:
7/4
Step-by-step explanation:
(4/7)^-1
We know a^-b = 1/a^b
1/ (4/7)^1
7/4
80 cm^2 i think this your answer
Answer:
7980
Step-by-step explanation:
900+80+7000=7980
