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TEA [102]
3 years ago
8

Which system is equivalent to the system shown and could be used to solve the system of equations correctly using the eliminatio

n method? 5x – 4y = 18 x + 3y = -4
Mathematics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

The solution is (2, -2)

Step-by-step explanation:

In order to solve this, multiply the second equation by -5 and then add through.

5x - 4y = 18

-5x - 15y = 20

------------------

-19y = 38

y = -2

Now that we have the value of y, we can solve for x.

x + 3y = -4

x + 3(-2) = -4

x - 6 = -4

x = 2

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3 years ago
Solve for x 5(x+1)=4(x+8)
joja [24]

Answer:

x=27

Step-by-step explanation:

expanding the above expression we get

5x+5=4x+32

grouping numbers with coefficient of x at the left side and constant at the right side we get

5x-4x=32-5

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8 0
3 years ago
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60% Of Herbs Movies Are Adventure Movies. He Has 18 Adventure Movies. How Many Movies Does Herb Have In All?
andriy [413]

30 movies.

18=60%

then reduce it down to a more simple number

3=10%

multiply by 10

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3 0
3 years ago
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Per day you have to drink 2250 ml. Your bottle of water is 550 ml. How much more water you need to put to you bottle of water to
Harrizon [31]

Answer:

If your bottle already has 550 ml in it you need to add 1,700 ml for a total of 2250 ml. If your bottle can only hold 550 ml you will need to drink about 4 bottles in order to drink 2250 ml of water.

Step-by-step explanation:

2250/550=4.09

3 0
3 years ago
A square has side length 6x+2. A rectangle with width 3x+1 has the same area as a square. What is the length of the rectangle
o-na [289]

Answer:

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Step-by-step explanation:

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(36x^2+24x+4)/3x+1=2(6x+2)=12x+4

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3 years ago
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