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24-01-2022
Mathematics

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Find the value of n.

A. 9
B. 22.5−−−−√
C. 45−−√
D. 18

Find the value of n A 9 B 225 C 45 D 18 class=

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24-01-2022

Answer:

A. 9

Step-by-step explanation:

[tex]{n}^{2} - 3 = 2 \times 39 \\ {n}^{2} - 3 = 78 \\n^{2} = 78 + 3 = 81 \\ n = \sqrt{81} = 9[/tex]

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