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Ksju [112]
3 years ago
9

Math help please 14 points and brainiest!!!

Mathematics
2 answers:
Cloud [144]3 years ago
5 0

The reason is because she didn't survey the school, but only surveyed her class, and to add to that It didn't say it was a random selection of students. Juliet concludes that short stories is the favorite type of book of the students in her school because 80% of the students in her class like short stories. Just because most of her class chose short stories she believes the rest of the school will have the same choice.

brilliants [131]3 years ago
5 0

Because she only ask to her class and get 80%. If she wants to know the favorite type of book of the students in her school she needs to ask to the whole school

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Answer:

Q(t) = 4.5(1.013)^{t}

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Step-by-step explanation:

The world population can be modeled by the following equation.

Q(t) = Q(0)(1+r)^{t}

In which Q(t) is the population in t years after 1980, in billions, Q(0) is the initial population and r is the growth rate.

The world population at the beginning of 1980 was 4.5 billion. Assuming that the population continued to grow at the rate of approximately 1.3%/year.

This means that Q(0) = 4.5, r = 0.013

So

Q(t) = Q(0)(1+r)^{t}

Q(t) = 4.5(1.013)^{t}

What will the world population be at the beginning of 2019 ?

2019 - 1980 = 39. So this is Q(39).

Q(t) = 4.5(1.013)^{t}

Q(39) = 4.5(1.013)^{39} = 7.45

The world population at the beginning of 2019 will be of 7.45 billion people.

6 0
3 years ago
Can someone please help me understand this?!?! i dont know what to even do.
Nonamiya [84]
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Using point slope equation, we can do...

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Step-by-step explanation:

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