Answer:
see below
Step-by-step explanation:
x1,y1 is the first point
x2, y2 is the second point
(x1+x2)/2 is the average of the x coordinates
(y1+y2)/2 is the average of the y coordinates
31 tenths is the answer because 10+10=20+1=31
Answer:
![x=61](https://tex.z-dn.net/?f=x%3D61)
Step-by-step explanation:
![-3+\sqrt{2x-1} =8](https://tex.z-dn.net/?f=-3%2B%5Csqrt%7B2x-1%7D%20%3D8)
![\sqrt{2x-1} -3=8](https://tex.z-dn.net/?f=%5Csqrt%7B2x-1%7D%20-3%3D8)
<u><em>Add 3 to both sides of the equation:</em></u>
![\sqrt{2x-1}-3+3=8+3](https://tex.z-dn.net/?f=%5Csqrt%7B2x-1%7D-3%2B3%3D8%2B3)
![\sqrt{2x-1}=11](https://tex.z-dn.net/?f=%5Csqrt%7B2x-1%7D%3D11)
<u><em>Solve the square root:</em></u>
![\sqrt{2x-1}=11](https://tex.z-dn.net/?f=%5Csqrt%7B2x-1%7D%3D11)
![2x-1=11^{2}](https://tex.z-dn.net/?f=2x-1%3D11%5E%7B2%7D)
![2x-1=121](https://tex.z-dn.net/?f=2x-1%3D121)
<em> {add 1 to both sides}</em>
![2x=122](https://tex.z-dn.net/?f=2x%3D122)
![x=122/2](https://tex.z-dn.net/?f=x%3D122%2F2)
![x=61](https://tex.z-dn.net/?f=x%3D61)
<u><em>hope this helps.......</em></u>
Answer:
1.) There are twice as many girls as there are boys in a sixth grade class.
2.) There are half as many boys as there are girls in a sixth grade class.
(x-2)+x+(x+2)=111
3x=111
3x/3=111/3
x=37
x-2=
37-2=
35
x+2=
37+2=
39
The smallest of the 3 numbers is 35.
Check: 35+37+39=111