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lakkis [162]
1 year ago
15

I realllly need help pls before 8am

Mathematics
1 answer:
MaRussiya [10]1 year ago
5 0

Answer:

20

Step-by-step explanation:

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A lake is stocked with 1,500 young trout. If the number of the original trout alive after x years is given by the function P(x)=
musickatia [10]

The function P(x)=1500e^{-0.4x} gives the number of the original trout alive after x years. When the number of the original trout alive is 300, then

300=1500e^{-0.4x}

Solve this equation:

e^{-0.4x}=\dfrac{300}{1500},\\ \\e^{-0.4x}=\dfrac{1}{5},\\ \\-0.4x=\ln \dfrac{1}{5},\\ \\x=\dfrac{\ln \dfrac{1}{5}}{-0.4}\approx 4.024.

Answer: after 4.024 year (or 5 year if round to the whole number of years)

7 0
4 years ago
David rents DVDS from a company that changes a $7.00 monthly fee and $1.50 for each dvd rental. He ends up paying $20.50 for the
serious [3.7K]
1.5x + 7 = 20.5
First subtract 7 from both sides
1.5x = 13.5
Then divide both sides by 1.5
x = 9


Let me know in comments if you have questions
3 0
3 years ago
Need help ASAP, I do not understand this one.
taurus [48]
2y+20=100
2y=80
y=40

The explanation for this would because because the two base angles of an isosceles triangle are equal so since the both equal to 40 degrees, in total would be 80 degrees.

Since the total degrees of a triangle is 180 and you know the base angles make up for 80 percent you subtract that from the total of the angle your trying to find, which is 2y+20.
6 0
3 years ago
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What is the relative frequency of male passengers?
Over [174]
A. 0.15 Because its making me type twenty characters.
3 0
4 years ago
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GIVING BRAIN PLZ DO ASAP
Alekssandra [29.7K]

Answer:

40x + 1500>3500 is the correct answer.

Step-by-step explanation:

6 0
3 years ago
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