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2 years ago

2x + y = 4 3x - y = 6

Mathematics

2 answers:

MrMuchimi2 years ago

8 0

y=(1/2)x-1

You have to set both to y and then add. After that you solve for y

Gekata [30.6K]2 years ago

7 0

So, just add

2x+y=4
<u>3x-y=6 +</u>
5x+0y=10

5x=10
divide 5
x=2

sub back
2x+y=4
2(2)+y=4
4+y=4
y=0

x=2
y=0
(2,0)

the result of adding the equation is 5x=10

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Drag each title to the correct box. Not all tiles will be used

mestny [16]

Answer:

4, 1, 6.

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Step-by-step explanation:

You are given the equation

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and multiply the equation by -1:

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2 years ago

Farmer Samantha has a cylindrical grain silo with a diameter of 12 feet and a height of 40 feet. The silo is filled with grain t

sammy [17]

Answer:

161,234 pounds of grain will remain in the silo

Step-by-step explanation:

In this question, we are to calculate the amount of grains that will be left in a silo if 20 cows feed on the content for 100 days.

Firstly, we need to calculate the amount of grains present in the silo.

This we can do by first calculating the volume of the silo. Since it is cylindrical in shape, we apply the formula for the volume of a cylinder.

Mathematically, the volume of a cylinder is

V = pi * r^2 * h

Here we have the r = D/2 = 12/2 = 6 feet and h = 40 feet. Plugging this , we have;

V = pi * 6^2 * 40 = 1440pi cubic feet

Now, per cubic feet, we have a weight of 48 pounds. The weight of grains thus present in the silo is thus;

1440pi * 28 = 1440 * pi * 48= 69,120pi pounds of grain

Let’s calculate what the cows would feast on. That would be 20 * 28 * 100 = 56,000 pounds of grains

Now we need to know what will remain. We just need to subtract what is consumed by the cows from we have inside the silo

What is inside the silo would be 69,120 * 22/7 = apprx 217,234 pounds

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2 years ago

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I don’t know how old this is but hopefully I’m not too late it’s 17 7+10=17 it is NOT 70 ‍♀️

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2 years ago

Which statement correctly describes the relationship between the graph of f(x) and g(x)=f(x−7)?

anzhelika [568]

Step-by-step explanation:

When the number is inside the parenthesis. It means horizontal shift. Now negative is to the right and positive is to the left. Since it is negative 7 it would be 7 units to the right

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2 years ago

Read 2 more answers

The length of each side of a square is 6 feet more than the length of a side of a regular Octagon. The perimeter of the square i

goldfiish [28.3K]

9514 1404 393

Answer:

square: 12 ft sides
octagon: 6 ft sides

Step-by-step explanation:

This problem can be worked in your head.

If the perimeters of the square and regular octagon are the same, the side length of the 4-sided square must be the same as the length of 2 sides of the 8-sided octagon. Since the side of the square is 6 ft more than the side of the octagon, each side of the octagon must be 6 ft, and each side of the square must be 12 ft.

We can let s represent the side length of the octagon. Then we have ...

8s = perimeter of octagon

4(s +6) = perimeter of square

These are equal, so ...

4(s +6) = 8s

s +6 = 2s . . . . . . divide by 4

6 = s . . . . . . . . . . subtract s

The octagon has 6-ft sides; the square has 12-ft sides.

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2 years ago