Answer:
What expressions are equivalent to 20
Step-by-step explanation:
since you didn't .show a link this is my guess, i guess.
4x5=20
We know:x^2+y^2+x−6y+9=0So, we complete the square as such:x^2+y^2+x−6y+9=x^2+x+y^2−6y+9=(x+1/2)^2+(y−3)^2=(1/2)^2=1/4
Answer:

Step-by-step explanation:
Use the Pyhagorean theorem:

We have

Substitute:

<em>subtract 49 from both sides</em>

Answer:5.6
Step-by-step explanation:multiply 2×2 and then 3.6×2 and then add them 2 and ÷ by 2
Answer:
The slope is 
Step-by-step explanation:
∵ The rule of the slope passing through 2 points is:
m = 
∵ The points are (7 , 8) and (-7 , 1)
∴ m = 