(correct answers only) (will mark brainliest) pete conducts a survey to find the most popular video games in the city. he randomly selects 10 people to participate in the survey. is this sample valid or not valid, and why? a. not valid; the survey question asks an opinion. b. valid; the survey chooses people at random. c. not valid; the survey asks too few people. d. valid; there is no bias in the survey.

Step-by-step explanation:

Given that Pete conducts a survey to find the most popular video games in the city. He randomly selects 10 people to participate in the survey.

Compared to the population of a city, sample of 10 is very small or negligible.Thus this small group opinion will not have any association witht he general opinion.

Hence we find that option C

C.not valid; The survey asks too few people.

Other options are not selected because survey is meant to get opinion only.(for A)

B is not selected because random selection is compulsory

D is not selected since it is true.

26?

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.