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In-s [12.5K]
2 years ago
8

I NEED HELP ASAP PLEASEEEE!!!!! Given the cube, what is the total surface area and volume?

Mathematics
2 answers:
Alex2 years ago
5 0

Answer:

864

Step-by-step explanation:

144x6

Free_Kalibri [48]2 years ago
3 0

Answer:

b

Step-by-step explanation:

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Scenario: Two people in a major city with a population of 450,000 get infected with a rapidly spreading virus. If each day the i
zmey [24]

1) See attachment.

2) See attachment

3) y=2^{x+1}

4) 17.8 days

Step-by-step explanation:

1)

The table is in attachment.

In this problem, we are told that the initial number of people infected ad day zero is two, so the first row is (0,2).

Then, we are told that each day, an infected person infects 2 additional people. Therefore, at day 1, the number of infected people will be 2*2=4.

Then, each of the 4 persons infect 2 additional persons, so the number of infected people at day 2 will be 4*2=8.

Continuing the sequence, the following days the number of infected people will be:

8*2 = 16

16*2 = 32

32*2 = 64

2)

The graph representing the situation is shown in attachment.

On the x-axis, we have represented the day, from zero to 5.

On the y-axis, we have represented the number of infected people.

We see that the points on the graph are:

0, 2

1, 4

2, 8

3, 16

4, 32

5, 64

3)

Here we have to create a mathematics model (so, an equation) representing this scenario.

First of all, we notice that the number of infected people at day 0 is 2:

p(0)=2

To write an equation, we call x the number of the day; this means that at x = 0, the value of y (number of infected people) is 2:

y=2

Then, at day 1 (x=1), the number of infected people is doubled:

y(1)=2y(0)=2\cdot 2 = 4

And so on. This means that for each increase of x of 1 unit, the value of y doubles: so, we can represents the model as

y=2\cdot 2^x

Or

y=2^{x+1}

4)

Here we are told that the entire city has a population of

p = 450,000

people.

In order for the virus to infect the whole population, it means that the value of y must be equal to the total population:

y = 450,000

Substituting into the equation of the model, this means that

450,000 = 2^{x+1}

And solving for x, we find the number of days after which this will happen:

log_2(450,000)=x+1\\x=log_2(450,000)-1=17.8 d

So, after 17.8 days.

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2 years ago
What is the slope of a line with points (3, 12)(7, 16)?
Softa [21]
Answer:

the slope is 1
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An interactive poll on the front page of the CNN website in October 2011 asked if readers would consider voting for Herman Cain,
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Answer:

The correct option is C) The results do not apply to any population because this was a voluntary response sample.

Step-by-step explanation:

Consider the provided information.

A statistics student used the information from the poll to calculate the 95% confidence interval.

A voluntary response sample is made up of volunteers. these types of samples are always biased.

Because the people who join the sample have strong opinions about a topic in either direction.

Therefore, the correct option is C) The results do not apply to any population because this was a voluntary response sample.

8 0
3 years ago
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