Answer:
102.2
Step-by-step explanation:
Answer:
Solving
for r gives us: ![r=\sqrt[3]{\frac{3v}{4\pi}}](https://tex.z-dn.net/?f=r%3D%5Csqrt%5B3%5D%7B%5Cfrac%7B3v%7D%7B4%5Cpi%7D%7D)
Solving
for v2 gives us: 
Step-by-step explanation:
Solving an equation for a variable or constant means that we have to isolate the value on one side of the equation or write the whole equation in terms of that variable or constant.
Now,
Solving
for r

Multiplying whole equation by 3/4


Dividing by Pi on both sides

Taking cube root on both sides
![\sqrt[3]{r^3} = \sqrt[3]{\frac{3v}{4\pi}} \\r = \sqrt[3]{\frac{3v}{4\pi}}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7Br%5E3%7D%20%3D%20%5Csqrt%5B3%5D%7B%5Cfrac%7B3v%7D%7B4%5Cpi%7D%7D%20%20%5C%5Cr%20%3D%20%5Csqrt%5B3%5D%7B%5Cfrac%7B3v%7D%7B4%5Cpi%7D%7D)
Now
Solving
for v2
Multiplying both sides by (t2-t1)

Adding v1 on both sides

Hence,
Solving
for r gives us: ![r=\sqrt[3]{\frac{3v}{4\pi}}](https://tex.z-dn.net/?f=r%3D%5Csqrt%5B3%5D%7B%5Cfrac%7B3v%7D%7B4%5Cpi%7D%7D)
Solving
for v2 gives us: 
Answer:
B
Step-by-step explanation:
When you multiply both sides by a negative value you make the side that is greater have a larger negative number, which actually means it is now less than the other side. This is why you mathematically have to flip the sign whenever you multiply by a negative number.
Answer:
x=7
Step-by-step explanation:
3x+9x=6x+42 add simalar elements 3x+9x=12x
12x=6x+42
12x-6x=6x+42-6x subract 6x from both sides
6x=42 simplify
6x/6=42/6 divide both by 6
x=7