For this case we must raise the equation according to the given statement.
Let the variable "x" be the unknown number.
So, three times the number is: 
If to that term is added "6" we have:
The sum of both terms is "12", then:
Thus, the equation is:
Answer:
270.1666666666667 this is the anwser
Answer:
6 minutes
Step-by-step explanation:
every minute is 120
720/120=6
Answer:
B (3x / ( 5pi)) ^ 1/3 = r
Step-by-step explanation:
x=5/3 pi r ^3
Multiply each side by 3/5
3/5 x= pi r ^3
Divide each side by pi
3x / ( 5pi) = pi r^3 /pi
3x / ( 5pi) = r^3
Take the cube root of each side
(3x / ( 5pi)) ^ 1/3 = r^3 ^ 1/3
(3x / ( 5pi)) ^ 1/3 = r
