What is the value of c? 7x2
7x4 + 4x – 20
–
can be factored into the form
(ax + b) (x + c)

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Ответ:

BlueWaaaazzzBerry

03.04.2023

Mathematics

$\frac{1}{9}$

Step-by-step explanation:

Given: A three-digit personal identification number is chosen using the digits 1-9.

The total ways to create a hree-digit personal identification number is chosen using the digits 1-9 is given by :-

$9^P_3=\frac{9!}{(9-3)!}=\frac{9\times8\times7\times6!}{6!}=504$

The number of ways to create a three-digit personal identification number is chosen using the digits 1-9 such that the first digit will be 6 (only two digit's place left to fill) is given by :-

$8^P_2=\frac{8!}{(8-2)!}=\frac{8\times7\times6!}{6!}=56$

Now, the approximate probability that the first digit will be 6= $\frac{56}{504}=\frac{1}{9}$

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What is the value of c? 7x2 7x4 + 4x – 20 – can be factored into the form (ax + b) (x + c)