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rodikova [14]
3 years ago
9

Need to find the value of N. need ASAP due to it being a hand in

Mathematics
1 answer:
olga_2 [115]3 years ago
7 0

Answer:

n=11

Step-by-step explanation:

This is a right angle, so the angles are complementary and have a sum of 90°.

4n-8+5n-1=90

9n-9=90

9n=99

n=11

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