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miss Akunina [59]
2 years ago
11

I need help i am timed

Mathematics
1 answer:
Vadim26 [7]2 years ago
3 0

Answer:

200 - 200

-147 - 53

90  -  143

-229 - -86

86 - 0

Step-by-step explanation: im not sure on the last two but i tried?

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Step-by-step explanation:

The gender of a child which is either a boy or a girl is determined by the XX-chromosomes, or XY-chromosomes.

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