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nadezda [96]
3 years ago
7

A hotel has 45 rooms. The hotel is building a new wing that will contain 25 rooms. How many rooms total will the hotel have afte

r the new wing is built? A) 20 rooms B) 50 rooms C) 60 rooms D) 70 rooms
Mathematics
2 answers:
kaheart [24]3 years ago
4 0
Add 45 and 25 to get 70 rooms.
yaroslaw [1]3 years ago
3 0
Add 45 and 25 and got 70 rooms the answer is D) 70 rooms
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babymother [125]
Using Gauss's method
Total number of terms = [15-(-129)]/4+1=36+1=37
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S=-129-125-...+7+11+15
--------------------------------
2S=-114-114-114...(37 times)
=>
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