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Elis [28]
4 years ago
15

Information about a circle is given:

Mathematics
1 answer:
Kruka [31]4 years ago
3 0
The radius of the circle  = 0-(-4)  = 4   ( because it is tangent to the x axis and the center is at (-2,-4).)

a.)  equation is  (x + 2)^2 + (y + 4)^2 = 16

b)   table of points

       x                   y
      -4                  2
      - 3                -0.13
      -2                  0
       0                  -0.54

and do the same for x = 1,2 and 3 
    
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In 1859, 24 rabbits were released into the wild in Australia, where they had no natural predators. Their population grew exponen
Mashcka [7]

Answer:

a) P' = P

   P(t) = 24e^{0.693t} where t is step of 6 months

b) 7.7 years

c)1064.67 rabbits/year

Step-by-step explanation:

The differential equation describing the population growth is

\frac{dP}{dt} = P

Where t is the range of 6 months, or half of a year.

P(t) would have the form of

P(t) = P_0e^{kt}

where P_0 = 24 is the initial population

After 6 month (t = 1), the population is doubled to 48

P(1) = 24e^k = 48

e^k = 2

k = ln(2) = 0.693

Therefore P(t) = 24e^{0.693t}

where t is step of 6 months

b. We can solve for t to get how long it takes to get to a population of 1,000,000:

24e^{0.693t} = 1000000

e^{0.693t} = 1000000 / 24 = 41667

0.693t = ln(41667) = 10.64

t = 10.64 / 0.693 = 15.35

So it would take 15.35 * 0.5 = 7.7 years to reach 1000000

c. P' = P_0ke^{kt}

We need to resolve for k if t is in the range of 1 year. In half of a year (t = 0.5), the population is 48

24e^{0.5k) = 48

0.5k = ln2 = 0.693

k = 1.386

Therefore, P' = 1.386*24e^{1.386t}

At the mid of the 3rd year, where t = 2.5, we can calculate P'

P' = 1.386*24e^{1.386*2.5} = 1064.67 rabbits/year

4 0
3 years ago
Which property is demonstrated?
Oksanka [162]
The Associative property of addition is being shown, because it doesn't matter the order of the terms.
4 0
3 years ago
Read 2 more answers
Can someone please help me with this question?
saw5 [17]
(0, 9) represents the y-intercept of the graph.

Since the slope is 1/3, this means that y will rise 1 for every 3 that x runs.

The points that can be used to make a line in this graph are (3, 10) and (6, 11).
3 0
3 years ago
Read 2 more answers
2 = (-x) Help I'm a not so bright blonde!
makvit [3.9K]
If you need to solve this equation you can multiply the both side of equation on (-1). Like that
<span>2 = (-x);
-1·2 = (-1)·(-x)
if you multiply negative and </span><span>positive </span>you'll have negative,
if you multiply negative and <span>negative you'll have </span><span><span>positive. So
</span> 
</span>-2 = x.  or
x = -2.
The answer is -2.
5 0
4 years ago
1. Below is data collected from a random sample of 40 people at the public library. If the public library has 300 people, then w
nataly862011 [7]

Answer:

please do the math luke a lesson and the beta is very weird so you want to do something about that so i suggest that you do 300.

5 0
3 years ago
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