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uysha [10]
3 years ago
11

A pipeline is to be run to a resort community which is on an island 16 kilometres from the closest point on the shoreline. The w

ater source for the pipe is 30 kilometres down the shore. If it costs $500/km to lay pipe through water and $300/km to lay pipe on land, at what point on the shoreline should the pipe turn into the water to minimize cost? What is the total cost?
Mathematics
1 answer:
Igoryamba3 years ago
8 0

Answer:

  1. hi pero love you
  2. kiss you

Step-by-step explanation:

helli

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Factor the expression.
g100num [7]

Answer:

(x + 1) (3 x^2 + 1)

Step-by-step explanation:

Factor the following:

3 x^3 + 3 x^2 + x + 1

Factor terms by grouping. 3 x^3 + 3 x^2 + x + 1 = (3 x^3 + 3 x^2) + (x + 1) = 3 x^2 (x + 1) + (x + 1):

3 x^2 (x + 1) + (x + 1)

Factor x + 1 from 3 x^2 (x + 1) + (x + 1):

Answer:  (x + 1) (3 x^2 + 1)

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one section of wood is 3 5/8 meters long. another section is twice that long. when the two pieces are put together how many is t
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the mixed number form is 10 7/8

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2 years ago
What is the equation of the line that is perpendicular to the given line and passes through the point (5,3)
Pani-rosa [81]

perpendicular lines have a slope that is a negative reciprocal


A) 4x-5y=5

subtract 4x

solve for y

-5y = -4x+5

divide by -5

y = 4/5 x+5   slope is 4/5  perpendicular slope is -5/4

y -y1 =m(x-x1)  point slope form of a line

y-3 = -5/4 (x-5)

B)  5x+4y = 37

subtract 5x

4y =-5x +37

divide by 4

y =-5/4 x +37/4  slope is -5/4 perpendicular slope is 4/5

y -y1 =m(x-x1)  point slope form of a line

y-3 = 4/5 (x-5)

C)4x+5y=5

subtract 4x

5y = -4x +5

divide by 5

y = -4/5 x +1

y =-4/5 x +1  slope is -4/5 perpendicular slope is 5/4

y -y1 =m(x-x1)  point slope form of a line

y-3 = 5/4 (x-5)

D)5x-4y=8

subtract 5x

-4y = -5x+8

divide by -4

y = 5/4 x-2

y =5/4 x +-2 slope is 5/4 perpendicular slope is -4/5

y -y1 =m(x-x1)  point slope form of a line

y-3 = -4/5 (x-5)



6 0
3 years ago
Suppose 100 people all toss a hat into a box and then proceed to randomly pick out a hat. what is the expected number of people
tatuchka [14]
1 person because there is 1 in 100 chance that you get your hat back
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Help Me ASAP PLEASE I NEED IT NOW I WILL GIVE BRAINLIEST
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Answer:

Vertex (2,2)

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On problems like this, use Desmos Graphing. It helps a lot.

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3 years ago
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