1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
umka2103 [35]
3 years ago
6

An oil refinery is located on the north bank of a straight river that is 2 km wide. A pipeline is to be constructed from the ref

inery to storage tanks located on the south bank of the river 10 km east of the refinery. The cost of laying pipe is$200,000/km over land to a point P on the north bank and $400,000/km under the river to the tanks. To minimize the cost of the pipeline, how far from the refinery should P be located? (Round your answer to two decimal places.)

Mathematics
1 answer:
VLD [36.1K]3 years ago
6 0

Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.  

You might be interested in
You have 100 yards of fencing available to create an enclosure for farm animals. As the
Sunny_sXe [5.5K]
1. area of a pentagon when 1 side is x is \frac{x^2}{4}\sqrt{5(5+2\sqrt{5})}
so if perimiter is 100 then one side is 100/5 or 20
area will be \frac{20^2}{4}\sqrt{5(5+2\sqrt{5})}≈<span>688.2 square yards

2. area of a hexagon when 1 side is length x is \frac{3x^2\sqrt{3}}{2}
so if permiter is 100 then length of one side is 100/6 or about 16.666666666666
the area will be \frac{3(16.6666666)^2\sqrt{3}}{2}≈721.7 square yards

3. area of a regular octagon with side lenghts x is 2(1+\sqrt{2})x^2
so if 8 sides then side length of each is 100/8 or 12.5
area will be 2(1+\sqrt{2})12.5^2≈754.4 square yards


octagon wil have most space
you can tell because the more sides it has, the more it gets to a circle and the more area it encloses with a given perimiter
</span>
3 0
3 years ago
Which equation represents a line that passes through (4, left-parenthesis 4, StartFraction one-third EndFraction right-parenthes
Alina [70]

Answer:

y-\frac{1}{3}=\frac{3}{4}(x-4)

Step-by-step explanation:

we know that

The equation of the line into point slope form is equal to

y-y1=m(x-x1)

In this problem we have

point\ (4,\frac{1}{3})

m=\frac{3}{4}

substitute the given values

y-\frac{1}{3}=\frac{3}{4}(x-4)

y minus StartFraction one-third EndFraction equals StartFraction 3 Over 4 EndFraction left-parenthesis x minus 4 right-parenthesis.(x – 4)

7 0
3 years ago
Read 2 more answers
How to solve the equation (5-7 (8+4)×2)
xxMikexx [17]

The correct answer is -163

Explanation:

First you calculate within the parentheses; (8+4)= 12: 5-7*12*2

Next you multiply and divide; 7*12 is 84*2 is 168

Then you add and subtract; 5-168 is -163

Hope This Helps!!!

5 0
3 years ago
What is the Estimate for 679 + 294
mestny [16]
The estimate for 679+294=1,000 <span />
6 0
3 years ago
Read 2 more answers
Which ordered pairs could be used to graph the equation 2x+y=5
Marrrta [24]

Answer:

(-2,9) ,(4,-3)

Step-by-step explanation:

Given the expression 2x+y=5

We are required to look for values of x and y such that when substituted into the given expression will result in the number 5

The Pairs are (-2,9) ,(4,-3)

Let us plug in the values to check

1. (-2,9)

2(-2)+9=5

-4+9=5

5=5 true

2. (4,-3)

2(4)+(-3)=5

8-3=5

5=5 true

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement is true about the given information ?
    6·1 answer
  • Suppose the working-age population of a fictional economy falls into the following categories: 90 are retired or homemakers; 60
    15·1 answer
  • The system of equations y = 2x - 1 and y = - 1/4 x + 3 is shown on the graph below.
    7·2 answers
  • What are m&lt;1 and m&lt;2?
    6·2 answers
  • What is the slope of this graph?<br> a. 4<br> b. -4<br> c. -1/4 <br> d. 1/4
    7·1 answer
  • Select the correct answer from the drop down menu
    10·1 answer
  • a triangular flower bed needs a thin metal border all the way around it. The sides are 7 feet, 6 feet, and 9 feet long.
    15·1 answer
  • Write and solve a word problem that involves dividing by 4
    13·1 answer
  • Given the net, what is the surface area of the rectangular prism below?
    12·1 answer
  • Given the table below, what is the x-intercept of the linear function? <br><br>​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!