The given expressions are
and 
We have to find the sum of the given expressions,

Combining the like terms of both the expressions, we get

=
.
The set of all possibilities is called sample space and is denoted by S.
So, S = {NBD, NDB, BDN, BND, DBN, DNB} and n(S) = 8
and we need to find the probability of NBD
E = {NBD} and n(E) = 1
The probability of an even is defined by p(E) = 
Hence, p(E) = 
Answer:
Answer : A. 7 to 6
A soccer team won 7 of its 13 game
Total games played by soccer team = 13
Games won by the team = 7
Games lost = total games played - games won
So games lost = 13 - 7 = 6
Now we find the ratio of win to losses
game won = 7
games lost = 6
So the ratio of won to losses is 7 to 6
Step-by-step explanation:
Ratio and proportion
45mi/60%=x miles/100%
cross multiply
60x=4500
x=75 miles
hope this helps