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
Alika [10]
2 years ago
7

I'm behind on hw and I'm going to fail if I don't get help.

Mathematics
1 answer:
Reil [10]2 years ago
6 0
Number two is A........hope this helps
You might be interested in
-5x-6. pls answer ill mark you brainliest
Artyom0805 [142]

Answer:

This is not an equation. So it's not possible to find the value of x..

7 0
2 years ago
Read 2 more answers
Have no idea how to do this-- Could someone show me how please. ​
motikmotik

Answer:

well E is (-7,-7) F is (-2,-3) G is (-1,-6)

Step-by-step explanation:

7 0
2 years ago
Can I get help on this math problem makes makes no sense
lana66690 [7]
(2,-1) The intersecting point is the point where the two lines meet.
5 0
3 years ago
Is 5:20 and 15:60 equivalent
kati45 [8]

Answer:

Yes! When simplifying 15:60 by dividing each side by 3, you get 5:20, which is the same as 5:20.

Step-by-step explanation:

Hope this helps <3

5 0
3 years ago
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
hichkok12 [17]

Answer:

P is exactly 3km east from the oil refinery.

Step-by-step explanation:

Let's d be the distance in km from the oil refinery to point P. So the horizontal distance from P to the storage is 3 - d and the vertical distance is 2. Hence the diagonal distance is:

\sqrt{(3 - d)^2 + 2^2} = \sqrt{(3 - d)^2 + 4}

So the cost of laying pipe under water with this distance is

800000\sqrt{(3 - d)^2 + 4}

And the cost of laying pipe over land from the refinery to point P is 400000d. Hence the total cost:

800000\sqrt{(3 - d)^2 + 4} + 400000d

We can find the minimum value of this by taking the 1st derivative and set it to 0

800000\frac{2*0.5*(3-d)(-1)}{\sqrt{(3 - d)^2 + 4}} + 400000 = 0

We can move the first term over to the right hand side and divide both sides by 400000

1 = 2\frac{3 - d}{\sqrt{(3 - d)^2 + 4}}

\sqrt{(3 - d)^2 + 4} = 6 - 2d

From here we can square up both sides

(3 - d)^2 + 4 = (6 - 2d)^2

9 - 6d + d^2 + 4 = 36 - 24d + 4d^2

3d^2-18d+27 = 0

d^2 - 6d + 9 = 0

(d - 3)^2 = 0

d -3 = 0

d = 3

So the cost of pipeline is minimum when P is exactly 3km east from the oil refinery.

3 0
3 years ago
Other questions:
  • What is 2 plus 2 man
    10·2 answers
  • What fraction is a multiple of1/9
    13·2 answers
  • How to solve for x and y?
    15·1 answer
  • What is the answer to:
    14·1 answer
  • 8 friends Share two pizzas equally how much does each friend get
    14·1 answer
  • Hello what is this answer 52.99290 rounded up
    10·2 answers
  • Find the number of degrees in each rotation shown below.
    14·1 answer
  • Solve the area of a trapezoid formula for the variable h: A = 1/2h(b1 + b2)
    5·1 answer
  • What does m represent in the equation y= mx+b? Iready
    6·1 answer
  • Write (x^2)^4 without any exponents.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!