Factor.
Z^2-9z+20
BOX METHOD WITH STEPS PLZ!!

there is your answer

Step-by-step explanation:

z^(2)-9z+20

Consider the form x 2 + b x + c . Find a pair of integers whose product is c and whose sum is b .

In this case, whose product is 20 and whose sum is − 9 . − 5 , − 4 Write the factored form using these integers. ( z − 5 ) ( z − 4 )

(z−4)(z−5)

Step-by-step explanation:

We need two numbers that...

Add together to get -9

Multiply together to get 20

-4 and -5 do just that!

So you fill in the blanks and get (z−4)(z−5)

Hope this helps :)

II

Step-by-step explanation:

The opinions of viewers of one television station are not necessarily representative of the population of a region.

Say a community has a thousand people, not everyone of those people would watch that exact station, among those that do watch which would be a few percentage, only a few also would even care to participate in the said survey.

You can't take a survey based on the responses gotten on just one station