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olga2289 [7]
3 years ago
14

Calculate 21+23+25...+81

Mathematics
1 answer:
motikmotik3 years ago
4 0

Answer:

150

Step-by-step explanation:

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Let's find the expressions for the length and width of the rectangle. The length (which we will call <em>l</em>) is 2 units less than some undefined number, thus we will use the variable <em>x</em>:
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