Answer:
r
Step-by-step explanation:......
Out of the six possible combinations shown in the tree, three of them have tails. Tails,1 tails,2 and tails,3 are the three possible solutions with tails. So the answer is C.
The answer could be, (5,0)
3/4 I think, but it also depends on the order of the birth, so it could be 7/8 as well.
Remember you can do anything to an equaiton as long as you do it to both sides
7x-4=5x+15
minus 5x both sides
2x-4=15
add 4 both sides
2x=19
divide by 2
x=19/2
