Answer:
you gotta email them, they might maybe get back to you but i dunno
Step-by-step explanation:
the answer is -1.728 if need to round up it will be -2.
Given:
ΔABC is an equilateral triangle.
AB = 7.5x, BC = 6x + 3 and CA = 10x - 5
To find:
The value of x.
Solution:
In equilateral triangle, all sides are equal.
AB = BC = CA
![7.5x=6x + 3 = 10x - 5](https://tex.z-dn.net/?f=7.5x%3D6x%20%2B%203%20%3D%2010x%20-%205)
Take any two sides only:
AB = BC
![7.5 x=6 x+3](https://tex.z-dn.net/?f=7.5%20x%3D6%20x%2B3)
Subtract 6x from both sides.
![7.5 x-6 x=6x+3-6x](https://tex.z-dn.net/?f=7.5%20x-6%20x%3D6x%2B3-6x)
![1.5 x=3](https://tex.z-dn.net/?f=1.5%20x%3D3)
Divide by 1.5 on both sides.
![$\frac{1.5 x}{1.5}=\frac{3}{1.5}](https://tex.z-dn.net/?f=%24%5Cfrac%7B1.5%20x%7D%7B1.5%7D%3D%5Cfrac%7B3%7D%7B1.5%7D)
![x=2](https://tex.z-dn.net/?f=x%3D2)
The value of x is 2.
9-n<span>>7
9-1</span><span> >7
8</span><span> >7
The answer is A.</span>