Answer:
30 degrees
Step-by-step explanation:
Let Angle ABC be 2x, Angle EBC be 5x

Answer:
417 fish
Step-by-step explanation:
139/(10/30)=139*3=417
Answer:
8
Step-by-step explanation:
First off, we need to recognize that the formula for the volume of a sphere is
.
Then, we can plug in our r values one at a time.
The volume for the sphere with a 6-inch radius is about 904.779.
The volume for the sphere with a 3-inch radius is about 113.097.
To find how much greater the larger sphere is, we simply create a ratio between the two numbers: 
Do the division to find that the volume of the larger sphere is about 8 times the volume of the smaller sphere.
You have to distribute the 7 to x and 2 so :
7x+14=2x-1
Add one to both sides (inverse operations)
7x+14=2x-1
+1 +1
7x+15=2x
Cross Cancel by subtracting 7x from both sides
7x+15=2x
-7x -7x
15=-5x
Divide by -5
15/-5= -5/-5
X= -3