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anyanavicka [17]
3 years ago
11

BRAINLIESTTT ASAP! PLEASE HELP ME :)

Mathematics
1 answer:
adoni [48]3 years ago
6 0

Answer:

15 2⁄9

Explanation:

1999 to 1990 → 9-year lifespan

137 = −412 + 549

15 2⁄9 = 137⁄9

I am joyous to assist you anytime.

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