Answer:
L = 12
W = 6
Step-by-step explanation:
W = 2L
A = L * W
A = 72
72 = L * 2L
72 = 3L
24 = L (you have to divide by 2)
L = 12
W = 6
Probably most likely 1.25% because in the question it doesn't say there is any blue marbles.
From the law of sines, we have
where 
is the leg we're interested in, 
is the hypothenuse, 
is the angle opposite to , and 
is the angle between and .
So, in the first case, we can use
And in the second excercise, we use
When you see this kind of question use « BODMAS »
1.Add the 2 digits which is 3+7=10
2.Add the digits inside which is 0.7+1.3=2
3.Add the inside and outside
3+7(0.7+1.3)
10(2)=20
