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natta225 [31]
2 years ago
15

Someone pls help pls

Mathematics
1 answer:
muminat2 years ago
5 0

Answer:

Part A: Scale is 0.5

Part B: (4, 0) (3, -1) (-1, 2)

Part C: Yes

Step-by-step explanation:

sorry can't be bothered writing explanation

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The world population at the beginning of 1980 was 4.5 billion. Assuming that the population continued to grow at the rate of app
AfilCa [17]

Answer:

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

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

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
Cassie rolls a fair number cube with 6 faces labeled 1 through 6. She rolls the number cube 300 times.Which result is most likel
Leona [35]
There would be no most likely result because every time that she rolls that dice there is a 1/6 chance of getting any given number.
7 0
3 years ago
62x+2.63x = 1<br> Solve<br> EN
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Step-by-step explanation:

answer is in photo above

5 0
3 years ago
Sara made a scale model of the Eiffel Tower in France. The actual height of the tower is 1063 feet. Sara's model used a scale in
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Answer:

Look for the bolded words ;'D

Step-by-step explanation:

The proportion setup would be 1/100=x/1063, since youre missing the inches from the actual model. By cross multiplying the equation to get 100x=1063, you'll now need to divide both sides of the equation by 100. This will get you 1063/100 inches, or you can get 10.63 inches by dividing 1063 by 100. You can also get 10 9/25 inches if you simplify the improper fraction...

....lol sorry for taking so long, but have a good day! :'D

8 0
3 years ago
Which of the following is the solution to x/5+3=10?<br> 1. 47<br> 2. -1<br> 3. 35<br> 4. -5
Bumek [7]

Answer: number 3, 35

Step-by-step explanation: i promise

4 0
2 years ago
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