Answer:
Step-by-step explanation:
From the given information;
The total number of ways to choose 7 number =
Number of ways to choose 7 correct numbers =
∴
The probability P( win $2500000) is;
= 5.36 × 10⁻⁸
The probability P( win $10000) is:
= 5.95 × 10⁻⁴
Answer:
C
Step-by-step explanation:
When completing the square, we essentially want to create a perfect square trinomial by adding a constant.
If we have the following expression:
And we want to complete the square, we will need to divide the b-coefficient by half and then square it.
Thus, the added term should be:
In the given equation, we have:
The b term here is 8. Therefore:
The value we would add would be 16.
The answer is C.
Further notes:
To complete the square, add 16 like mentioned earlier. However, we also need to subtract 16 to balance things out:
The expression inside the parentheses is now a perfect square trinomial. Factor it:
And we are done!