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damaskus [11]
3 years ago
7

The fish population in a local stream is decreasing at a rate of 2.5% per year. The original population was 45,000. Write an exp

onential function to model this situation. Use y and x as your variables.
Mathematics
1 answer:
Julli [10]3 years ago
4 0

Answer:

y=45000(1-0.03)^x

Step-by-step explanation:

1) the exponential decay formula is

y=c(1-r)^x

where c= starting amount

r=rate of change

x=time

so

y=45000(1-0.03)^x

y=45000-1350x

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U have a lead coefficient of -2.
Ur constant term is -10
And ur middle term (24x^2) has a degree of 2

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example would be : x^3 - 4

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3x^2 + 6xy -10x^5 + y^6 - 10x^3y^5

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A robot can complete 7 task in 5/6 hours. Each task takes the same amount of time. I don’t understand the question
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2 years ago
If 2/3 equals = X/12 what is the value of x
Blizzard [7]

Answer:

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2 years ago
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The blades of a windmill turn on an axis that is 40 feet from the ground. The blades are 15 feet long and complete 3 rotations e
astraxan [27]

Answer:

a is the _amplitude_(Length of the blades)_

The vertical shift, k, is the _Mill shaft height_

a = 15\ ft\\\\k = 40\ ft

y = 15sin(\frac{\pi}{10}t) + 40

Step-by-step explanation:

In this problem the amplitude of the sinusoidal function is given by the length of the blades.

a = 15\ ft

The mill is 40 feet above the ground, therefore the function must be displaced 40 units up on the y axis. So:

k = 40\ ft

We know that the blades have an angular velocity w = 3 rotations per minute.

One rotation = 2\pi

1 minute = 60 sec.

So:

w = \frac{3(2\pi)}{60}\ rad/s

w = \frac{\pi}{10}\ rad/s

Finally:

a is the _amplitude_(Length of the blades)_

The vertical shift, k, is the _Mill shaft height_

a = 15\ ft\\\\k = 40\ ft

y = 15sin(\frac{\pi}{10}t) + 40

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3 years ago
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Just finished the test and the write answers are :

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