Answer:
This is not an equation. So it's not possible to find the value of x..
Answer:
well E is (-7,-7) F is (-2,-3) G is (-1,-6)
Step-by-step explanation:
(2,-1) The intersecting point is the point where the two lines meet.
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
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:

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

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

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

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


From here we can square up both sides






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