Answer:
1.
![\frac{n^{2} - 1 }{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bn%5E%7B2%7D%20-%201%20%7D%7B2%7D%20)
2.
![\sqrt{29}](https://tex.z-dn.net/?f=%20%5Csqrt%7B29%7D%20)
Step-by-step explanation:
Area of triangle=1/2×b×h
=
![\frac{1}{2} \times (n - 1)(n + 1)](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20%20%5Ctimes%20%28n%20-%201%29%28n%20%2B%201%29)
![\frac{( {n}^{2} + n - n - 1) }{2 }](https://tex.z-dn.net/?f=%20%5Cfrac%7B%28%20%7Bn%7D%5E%7B2%7D%20%2B%20n%20-%20n%20-%201%29%20%7D%7B2%20%7D%20)
![\frac{ {n}^{2} - 1 }{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%7Bn%7D%5E%7B2%7D%20-%201%20%7D%7B2%7D%20)
2. Area of triangle=14
![\frac{ {n}^{2} - 1 }{2} = 14](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%7Bn%7D%5E%7B2%7D%20-%201%20%7D%7B2%7D%20%20%3D%2014)
![{n}^{2} - 1 = 28](https://tex.z-dn.net/?f=%20%7Bn%7D%5E%7B2%7D%20%20-%201%20%3D%2028)
![{n}^{2} = 29](https://tex.z-dn.net/?f=%20%7Bn%7D%5E%7B2%7D%20%20%3D%2029)
![n = \sqrt{29}](https://tex.z-dn.net/?f=n%20%3D%20%20%5Csqrt%7B29%7D%20)
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126 inches
(Ask me if you have any questions :) )
Answer:
Point A would be at the coordinates, (-4, 1). Hope this helps!
A first step in solving the equation 1/4 x + 1/2 = 3/4x will be answer A multipllied by 4 on both sides.
What is an equation?
The equation is actually a relationship between the numbers and the variables.The given equation is 1/4 x + 1/2 = 3/4x
Now the solution of the equation will be:-
1/4 x + 1/2 = 3/4x
By multiplying with 4 the equation will become:-
x+2=3x
3x-x=2
2x=2
x=1
Hence the solution of the given equation will be x=1
To know more about equations follow
brainly.com/question/2972832
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