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Yuliya22 [10]
3 years ago
13

Để đón khách du lịch đến Hải Dương hàng năm, Ủy Ban Nhân Dân tỉnh Hải Dương quyết định thực hiện dự án"cải tạo và xây dựng mới k

hu du lịch,vui chơi giải trí". Dự án được xây dựng với chi phí và doanh thu như sau:
-Dự tính chi phí đền bù,giải tỏa khoảng 20 triệu USD,chi phí xây lắp và thiết bị khoảng 60 triệu usd,các chi phí đầu tư khác khoảng 12 triệu usd.
-Dự tính doanh thu hàng năm khoảng 50 triệu usd,chi phí hàng năm để tạo ra số doanh thu trên,ước tính bằng 6% doanh thu(trong chi phí chưa có khấu hao và vốn vay).
-Dự án yêu cầu cứ sau 15 năm hoạt động phải sửa chữa định kỳ 1 lần hết 10 triệu usd.
-Dự án kinh doanh dự kiến trong 30 năm.Sau khi ngừng hoạt động giá trị thanh lý là 20 triệu USD.Lãi suất trên thị trường vốn là 12%/năm. Hãy tính các chỉ tiêu đánh giá hiệu quả tài chính của dự án.
Mathematics
1 answer:
lbvjy [14]3 years ago
5 0

Answer:

Step-by-step explanation:

sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus sus

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Solve this equations for all real solutions 3t^2+4t+8=-6t
ra1l [238]

Answer:

t= -1.33 recurring and -2

Step-by-step explanation:

3t²+4t+8=-6t

3t²+4t+6t+8

3t²+10t+8

This is a quadratic equation, it can be solved by using either factorisation, completing the square method or formulae method. For the purpose of this question, I would be using the formulae method.

-b±√(b²-4ac)/2a

Where a=3, b= 10 and c=8

-10±√(10²-4(3)(8))/2(3)

-10±√(100-96)/6

(-10±√4)/6

(-10±2)/6

-10+2/6 or -10-2/6

-8/6 or -12/6

-1.3333 recurring or -2

8 0
3 years ago
A sock drawer contains 5 different colors of socks. It has 20 white, 10 black, 10 gray, 6 red, and 4 purple. If you
djyliett [7]

Answer:

Added all together= 50

Black socks= 10

10/50

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Can some please explain how to do the math
UNO [17]

Answer:

The enrollment drop is 12 students per year. The equation is 60=5d. The complete sentence would be the enrollment drop at the after school program dropped 12 students per year, and the equation is 60=5d

Step-by-step explanation:

So I will start with explaining the equation. 60 is the amount of students that dropped, 5 is the year, and d is the enrollment drop rate per year that you are trying to find. The way to use this equation is to isolate d. To do that you divide both sides of the equation by 5, this leaves you with 12 = d. Therefore your yearly enrollment drop is 12 students.


60 = 5d

60/5 = d

60/5 = 12

12 = d

Hopefully this explained your answer.

8 0
3 years ago
Let X be a Bernoulli rv with pmf as in Example 3.18. a. Compute E(X2 ). b. Show that V(X) 5 p(1 2 p). c. Compute E(X79).
spayn [35]

The Bernoulli distribution is a distribution whose random variable can  only take 0 or 1

  • The value of E(x2) is p
  • The value of V(x) is p(1 - p)
  • The value of E(x79) is p

<h3>How to compute E(x2)</h3>

The distribution is given as:

p(0) = 1 - p

p(1) = p

The expected value of x2, E(x2) is calculated as:

E(x^2) = \sum x^2 * P(x)

So, we have:

E(x^2) = 0^2 * (1- p) + 1^2 * p

Evaluate the exponents

E(x^2) = 0 * (1- p) + 1 * p

Multiply

E(x^2) = 0 +p

Add

E(x^2) = p

Hence, the value of E(x2) is p

<h3>How to compute V(x)</h3>

This is calculated as:

V(x) = E(x^2) - (E(x))^2

Start by calculating E(x) using:

E(x) = \sum x * P(x)

So, we have:

E(x) = 0 * (1- p) + 1 * p

E(x) = p

Recall that:

V(x) = E(x^2) - (E(x))^2

So, we have:

V(x) = p - p^2

Factor out p

V(x) = p(1 - p)

Hence, the value of V(x) is p(1 - p)

<h3>How to compute E(x79)</h3>

The expected value of x79, E(x79) is calculated as:

E(x^{79}) = \sum x^{79} * P(x)

So, we have:

E(x^{79}) = 0^{79} * (1- p) + 1^{79} * p

Evaluate the exponents

E(x^{79}) = 0 * (1- p) + 1 * p

Multiply

E(x^{79}) = 0 + p

Add

E(x^{79}) = p

Hence, the value of E(x79) is p

Read more about probability distribution at:

brainly.com/question/15246027

5 0
3 years ago
Write an equation in slope intercept form (y=mx+b) for the graph below .
jolli1 [7]

Answer:

Step-by-step explanation:

b would be 0

your slope is rise/run. up one and over three. up one and over three. so 1/3

write it as y=1/3x+0, or y=1/3x

6 0
3 years ago
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