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Anuta_ua [19.1K]
2 years ago
8

5. Solve for x using the model below* Enter your answer as a number ​

Mathematics
1 answer:
sergeinik [125]2 years ago
6 0

Answer:

Step-by-step explanation:

Each triangle = - x

There are 4 of them

They equal -4x

The circles all = 1

There are 3 circles on the left

They equal 3*1 = 3

There are eleven circles on the right.

-4x + 3 = 11             Subtract 3

-4x/-4 = 8               Divide by - 4

x = 8/-4

x = -2

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The erea of a square is given by x2, where x is the length of one side. Mary's original garden was in the shape of a square. She
crimeas [40]

Answer: The expression that represents the area of Mary's new garden =2x^2

Step-by-step explanation:

The area of a square is given by x^2, where x is the length of one side. The length of the other side is also x. In a square, all sides are equal. each of the four sides equal x

Area = x × x

Area = x^2

She decided to double the area of her garden

New area = 2(x × x)

New area = 2x^2

The expression that represents the area of Mary's new garden =2x^2

7 0
2 years ago
Does anyone know how to do this?
xeze [42]

Answer:

Step-by-step explanation:

6 0
2 years ago
According to the 2010 U.S. Census, there are approximately 8 million people living in Virginia. This is 2.8 million less than 4
galina1969 [7]
8 = 4N - 2.8
Add 2.8
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2 years ago
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The population P(t) of a species satisfies the logistic differential equation dP/dt= P(2-(P/5000)) where the initial population
Elis [28]
A logistic differential equation can be written as follows:
\frac{dP}{dt} = rP[1- \frac{P}{K}]

where r = growth parameter and K = carrying parameter.

In order to write you equation in this form, you have to regroup 2:
\frac{dP}{dt} = 2P[1- \frac{P}{10000}]

Therefore, in you case r = 2 and K = 10000

To solve the logistic differential equation you need to solve:

\int { \frac{1}{[P(1- \frac{P}{K})] } } \, dP =  \int {r} \, dt

The soution will be:

P(t) = \frac{P(0)K}{P(0)+(K-P(0)) e^{-rt} }

where P(0) is the initial population.

In your case, you'll have:

P(t) = <span>\frac{3E7}{3E3+7E3 e^{-2t} }

Now you have to calculate the limit of P(t).
We know that
</span>\lim_{t \to \infty}  e^{-2t} -\ \textgreater \  0  &#10;

hence,

\lim_{t \to \infty} P(t) =  \lim_{t \to \infty}  \frac{3E7}{3E3+0} =  10^{4}<span>

</span><span>

</span>
5 0
2 years ago
a rectangular piece of paper 71 cm long and 10m wide . a cylinder is formed by rolling the paper along its length , find volume
natka813 [3]

Answer:

Volume=355 cm³

Step-by-step explanation:

I assume it should be 10 cm, not 10 m.  If it is 10 m, everything will have to be adjusted.

Circumference = 2\pir

10=2\pir

10÷2\pi=r

1.59=r

V=\pir²h

V=\pi(1.59)(71)

v=355

7 0
2 years ago
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