Question

PLEASE HELP ME RN PLEASE ​

Answer 1

Answer:

1.

$\frac{n^{2} - 1 }{2}$

2.

$\sqrt{29}$

Step-by-step explanation:

Area of triangle=1/2×b×h

=

$\frac{1}{2} \times (n - 1)(n + 1)$

$\frac{( {n}^{2} + n - n - 1) }{2 }$

$\frac{ {n}^{2} - 1 }{2}$

2. Area of triangle=14

$\frac{ {n}^{2} - 1 }{2} = 14$

${n}^{2} - 1 = 28$

${n}^{2} = 29$

$n = \sqrt{29}$

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