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dmitriy555 [2]
3 years ago
10

12. Mr. Ellis needs to drain his above ground pool before the winter. The graph below represents the relationship between the nu

mber of gallons of water remaining in the pool and the number of hours that the pool has drained. How many hours will it take for the all the water to be completely drained out of the pool?​

Mathematics
1 answer:
zalisa [80]3 years ago
5 0

Answer:

14 hrs

Step-by-step explanation:

Graphically we can see the line decreases one grid vertically (720 gal) for every one grid horizontally (1 hour)

If we imagine extending the line to the right, the next dot will occur at 12 hrs and 1440 gallons followed by the final dot on the x axis (zero gallons) at 14 hrs

We could also write an equation in slope intercept form

b = 10080 gallons

m = -720 gal/hr

y = -720x + 10080

we want to know the hours x when gallons y = 0

0 = -720x + 10080

720x = 10080

x = 10080/720 = 14 hrs

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mafiozo [28]
I believe the answer is B
4 0
3 years ago
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Question 2 (1 point)
Papessa [141]

Answer:

55.734 mph

Step-by-step explanation:

Let's call the wind speed x and the time of flight t.

Then, we can write the following equation, knowing that the distance is equal speed times time of flight:

910 = (350+x) * t

660 = (350-x) * t

If we isolate t in both equations and compare its value, we have that:

910 / (350+x) = 660 / (350-x)

(350+x)/(350-x) = 910/660

350 + x = 1.3788 * (350-x)

350 + x = 482.58 - 1.3788x

2.3788x = 132.58

x = 55.734 mph

4 0
3 years ago
I don't understand this I have spent many points on this same question so this time I will be giving brainliest for the first co
Marrrta [24]

Given:

|3+4 i|+|3-4 i|+|-3+4 i|+|-3-4 i|

Solution:

Complex formula:

|a+b i|=\sqrt{(a+b i)(a-b i)}=\sqrt{a^{2}+b^{2}}

Let us simplify one by one.

|3+4 i|=\sqrt{3^{2}+4^{2}}

           =\sqrt{25}

|3 + 4i| = 5

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

           =\sqrt{25}

|3 - 4i| = 5

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

           =\sqrt{25}

|-3 + 4i| = 5

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

           =\sqrt{25}

|-3 - 4i| = 5

Substitute these in the given expression:

|3+4 i|+|3-4 i|+|-3+4 i|+|-3-4 i|=5+5+5+5

                                                                  =20

The solution of the expression is 20.

8 0
3 years ago
Answer right you get brainiest also 20 points just number 1 and 2
Klio2033 [76]

Answer:

1. Newton's law of gravitation. Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them.

2. The key difference is that Newtonian gravity has a privileged separation of spacetime into space and time, whereas Einsteinian gravity just has spacetime. Edit: to be absolutely clear, Newtonian gravity can be written as spacetime curvature! This is counter to the common statements about the novel thing in GR.

Step-by-step explanation:

4 0
3 years ago
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The Correct Answer Is?
Alekssandra [29.7K]
Hello!

n<span>≤-1/2 means that n is less than the open circle, because an open circle means the variable can not be equal to that point. so your answer is: D

I hope this helps, and have a nice day.
</span>
8 0
3 years ago
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