See the attached graphic to see this solved for "r".
You should be very careful about stating the units for each of those variables.
time in seconds
radius in meters
mass in kilograms
G = 6.674 x 10^-11 m^3 / (kilograms * seconds²)
Also, it would be worth your while to go to this web page http://www.1728.org/kepler3a.htm
It has a calculator and other information about Kepler's Third Law.
 
        
        
        
Answer:
Maggie is 13 years old. 
Step-by-step explanation:
1M + 1B = 62 
rearrange to get:
1B = 62 - 1M
4M - 3 = 1B
substitute B with 62 - 1M so there is only one variable. this gives:
4M - 3 = 62 - 1M
Get all the variables on one side:
4M + 1M - 3 = 62
Get all non variables on the other side:
4M + 1M = 62 + 3
simplify:
5M = 65
Divide both sides by 5 to get the M by itself:
M = 13. 
BONUS:
M + B = 62
B = 49
So her brother is 49 years old. 
Maggie is 13 years old. 
 
        
             
        
        
        
Answer: 22%
Step-by-step explanation: 
 
        
             
        
        
        
Answer:
speak English I don't understand your letter?and what your question?
 
        
             
        
        
        
The cosine ratio is adjacent leg divided by the hypotenuse.
The hypotenuse in a right triangle is the longest side and it is opposite the right angle.
An adjacent leg is the side that has an endpoint that is at the vertex of the angle and the other endpoint is at the vertex of the right angle.
cos A = 

ANSWER: 
