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Nana76
1 month ago
13

A warren of rabbits has a population of 25. The population is increasing at a rate of 20% per year. How can you write an exponen

tial growth function to find the monthly growth rate?
Mathematics
1 answer:
tester [12.3K]1 month ago
6 0

Answer:

(Refer to explanation)

Step-by-step explanation:

The differential equation associated with exponential growth is:

\frac{dn}{dt} = k\cdot n

The formula is rearranged and later integrated:

\frac{dn}{n} = k \cdot dt

\int\limits_{n_{o}}^{n} {\frac{dn}{n} } = k\cdot \int\limits_{0}^{t}\, dt

\ln \frac{n}{n_{o}} = k\cdot t

\frac{n}{n_{o}} = e^{ k\cdot t}

n = n_{o}\cdot e^{k\cdot t}

An exponential growth function can help identify the monthly growth function as follows:

\ln 1.2 = k\cdot 12

k = 0.015

The coefficients found in the expression are, respectively:

n_{o} = 25

k = 0.015

The monthly exponential growth function is presented as:

n(t) = 25\cdot e^{0.015\cdot t}, where t is expressed in months.

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You are hiking and trying to determine how far away the nearest cabin is, which happens to be due north from your current positi
PIT_PIT [12445]

Answer:

The cabin is located 567 yards away.

Step-by-step solution:

The bearing angle of 21.2° corresponds to the interior angle near the cabin in the triangle.

Apply the tangent function:

Opposite side length: 220 yards

Adjacent side length: x (distance to cabin)

tan(21.2°) = opposite / adjacent

tan(21.2°) = 220 yards / x

Multiply both sides by x:

x × tan(21.2°) = 220 yards

Isolate x:

x = 220 yards / tan(21.2°)

x = 220 / 0.388

x = 567 yards

Hence, the cabin is 567 yards away.

6 0
3 months ago
x2y - 2xy - 24y = y(x2 - 2x - 24) What is the completely factored form of x2y – 2xy – 24y? (xy + 4)(x – 6) xy(x + 4)(x – 6) y(x
babunello [11817]

We start with

x^2y-2xy-24y=y(x^2-2x-24)

Next, we can factor out the term on the right side

x^2-2x-24=x^2-6x+4x-6*4

x^2-2x-24=(x-6)(x+4)

Now, we will substitute back

resulting in

So,

x^2y-2xy-24y=y(x-6)(x+4).............Response

5 0
2 months ago
Read 2 more answers
XY= 2x +1, YZ= 6x, and XZ=81
tester [12383]
 x = 27 + 3 √ 129/ 4, 27 − 3 √ 129/ 4

Please note: the entire equation mentioned is divided by 4, not only the last term. 

 x approximates to 15.26836251, − 1.76836251

That concludes my response. I hope this is helpful. You will still need to work on finding y and z, which can be quite challenging:)
8 0
2 months ago
Describe in words the surface whose equation is given. (assume that r is not negative.) θ = π/4
tester [12383]
An equation of the form \theta=\dfrac{\pi}{4} describes a line
that passes through the origin and whose tangent corresponds to \dfrac{\pi}{4}. Generally, any equation formatted as \theta=\theta_0
represents a line. 
7 0
1 month ago
There is a sidewalk of width x around a rectangular garden. If the garden measures twenty-feet by thirty-feet, then the combined
PIT_PIT [12445]

Answer:

Area = 200 + 50 + x

Step-by-step explanation:

Given

Length = 20

Width = 30

Side Walk = x

Required

Find the total area.

To find this, we have to add the length of the sidewalk to the dimensions of the garden.

This results in:

Length = 20 + x.

Width = 30 + x

So, the area now becomes.

Area = (20 + x)(30 + x)

Area = 600 + 20x + 30x + x²

Area = 200 + 50 + x²

5 0
1 month ago
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