2 years ago

7.

Mathematics

2 answers:

o-na [289]2 years ago

6 0

Answer:

answer...

Step-by-step explanation:

here is u answer

IRINA_888 [86]2 years ago

4 0

Answer:

$- \frac{1}{2} {n}^{2} + 18 = 0 \\ - \frac{1}{2} {n}^{2} = - 18 \\ {n}^{2} = - 18 \times - 2 \\ {n}^{2} = 36 \\ n = + - \sqrt{36} \\ n = + - 6$

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