Answer:
A
Step-by-step explanation:
- <em>The vertex of an angle is the common endpoint of two rays that form the angle.</em>
<u>Vertex of angle 6 can be described as:</u>
Correct answer choice is A
Answer:
![x=4](https://tex.z-dn.net/?f=x%3D4)
Step-by-step explanation:
Given triangle is a right angle triangle
To find out x we use Pythagorean theorem
![c^2=a^2+b^2](https://tex.z-dn.net/?f=c%5E2%3Da%5E2%2Bb%5E2)
where c is the hypotenuse
c=square root (20),![a=x and b=x-2](https://tex.z-dn.net/?f=a%3Dx%20and%20b%3Dx-2)
Plug in the values in the formula
![(\sqrt{20} )^2= x^2+(x-2)^2](https://tex.z-dn.net/?f=%28%5Csqrt%7B20%7D%20%29%5E2%3D%20x%5E2%2B%28x-2%29%5E2)
![20=x^2+x^2-4x+4](https://tex.z-dn.net/?f=20%3Dx%5E2%2Bx%5E2-4x%2B4)
![20=2x^2-4x+4](https://tex.z-dn.net/?f=20%3D2x%5E2-4x%2B4)
Subtract 20 on both sides
![0=2x^2-4x+-16](https://tex.z-dn.net/?f=0%3D2x%5E2-4x%2B-16)
Divide whole equation by 2
0=x^2-2x-8
factor the right hand side
![0=(x-4)(x+2)](https://tex.z-dn.net/?f=0%3D%28x-4%29%28x%2B2%29)
Set each factor =0 and solve for x
so ![x=4](https://tex.z-dn.net/?f=x%3D4)
so ![x=-2](https://tex.z-dn.net/?f=x%3D-2)
The length x cannot be negative, so ![x=4](https://tex.z-dn.net/?f=x%3D4)
Answer:
7.5
Step-by-step explanation:simply divide 30 and 4 and the answer is 7.5
The answer is D.
6 wasnt multiplied by 3.
the expression should look like this "6m+18"