(Please correct answers only) (Will mark brainliest)

Mathematics

2 answers:

sergij07 [2.7K]3 years ago

8 0

The answer is B., valid because people were chosen randomly
This would make it a valid survey
Hope this helps!
;3

FrozenT [24]3 years ago

6 0

Answer:

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.

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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.

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Please help me with this question??m

Keith_Richards [23]

Answer:

Step-by-step explanation:

f(1) = 7

f(n) = 3f(n-1) + 3

So what you are trying to do here is find the recursive value (that's what it is called) for f(n). Computers love this sort of thing, but we humans have to do it slowly and carefully.

So let's try f(2)

That means that f(2) = 3*f(n-1) + 3

but if f(2) is used it means that you have to know f(2-1) which is just f(1) and we know that.

so f(2) = 3*f(1)+3

f(2) = 3*7 + 3

f(2) = 21 + 3

f(2) = 24

Now do it again. We now know F(2), so we should be able to find f(3)

f(3) = 3*f(3 - 1) + 3

f(3) = 3*f(2) + 3 We know that f(2) = 24

f(3) = 3* 24 + 3

f(3) = 72 + 3