Pls have been stuck on this question for a long time
1 answer:
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Given:
The quadratic function is
To find:
The number of zeros.
Solution:
We know that,
Number of zeros of a polynomial = Degree of the polynomial.
We have, a quadratic function is
Here, degree of function is 2.
For zeros .
Therefore, the number of zeros of given quadratic function is 2 which are 0 and 0.
The first digit of the password can be any of the ten digits - 10 possibilities.
A digit cannot be repeated, so the second digit can be any digit except the one you chose for the first digit - 9 possibilities.
The third digit can be any digit except the digits you chose for the first and second digit - 8 possibilities.
Using the rule of product:
There are 720 passwords.
A digit cannot be repeated, so the second digit can be any digit except the one you chose for the first digit - 9 possibilities.
The third digit can be any digit except the digits you chose for the first and second digit - 8 possibilities.
Using the rule of product:
There are 720 passwords.