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6. Robbie is 90 cm tall. If he grows 10 cm next year and then 1 cm less each year after that, how tall will he be in ten years?​

User Xuhcc
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1 Answer

2 votes

Answer:

145cm

Explanation:

90+10+9+8+7+6+5+4+3+2+1

User DkAngelito
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