I realllyyy need help I feel so dumb idk why :(
1 answer:
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Answer:
Step-by-step explanation:
Alice and Bill are planning to have three children
We have to find the probability that all three of their children will be girl.
Sample space =S={BBB,BBG,BGB,GBB,GGG,GBG,GGB,BGG}
Total =8
Number of cases in which all three children are girls={GGG}
Probability,P(E)=
Using the formula
Then , the probability that all three of their children will be girls=
Answer:
Complex roots
Step-by-step explanation:
Given
Required
The type of solution
Rewrite as:
To determine the type of solution, we simply calculate the discriminant (D)
Where
So, we have:
The above value implies that:
When , the solution of the equation is: complex roots