Answer:
i hope this helps
Step-by-step explanation:
2
-16=0
+16 +16
2
=16
÷2 ÷2
= 8
= 
x= 
-5
+9=0
-9 -9
-5
=-9
÷-5 ÷-5
=1.8
= 
x= 
6
-15=27
+15 +15
6
=42
÷6 ÷6
=7
= 
x=
The way to get the equation for the radius (r) is to get r by itself. So divide each side by 4pi
500/4pi=r^2
Now take the square root of each side to get the equation of r.
sqrt(500/4pi)=r
Answer: x = (cd + by) / a
Working out:
(ax - by) / c = d
1)Multiply by c on both sides to get:
ax - by = cd
2) Add by on both sides to get:
ax = cd + by
3) divide by a on both sides to get:
x = (cd + by) / a
In great east japan a tsunami happened