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neonofarm [45]
3 years ago
15

Which is a solution -2x-y=1 and -4x-2y=-1

Mathematics
1 answer:
grin007 [14]3 years ago
7 0

Answer:

No solutions.

Step-by-step explanation:

-2x -  y = 1

-4x - 2y = -1 Multiply the first equation By  -2:

4x + 2y = -2  Adding:

0 = -3

which is absurd so there are no solutions.

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The Difference between two number is 18.5 find the second number​
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it can literally be anything you didnt give any information about the first number

Step-by-step explanation:

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Write a inequality to represent a number is at most two
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x≤2

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The first one is -4 and the second one is 6.
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A 31​-inch piece of steel is cut into three pieces so that the second piece is twice as long as the first​ piece, and the third
Nostrana [21]

Answer:

The length of the first piece is 4 inches, that of the second is 8 inches and the third 19 inches.

Step-by-step explanation:

Total length of the steel = 31 inches

Let the length of the first piece = x

let the length of the second piece = y

Let the length of the third piece = z

So,    

  y = 2x

  z = 4x + 3

x + 2x + 4x +3  = total length of the steel = 31

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    7x = 28

    x= 4 inches

Thus; y = 2x = 2 × 4 = 8 inches

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∴The length of the first piece is 4 inches, that of the second is 8 inches and the third 19 inches.

6 0
3 years ago
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Given the points A (-4,-2) and B (4, 10), find the
mafiozo [28]

Answer:

  P = (2, 7)

Step-by-step explanation:

You want to find coordinates of P on segment AB such that P is 3/4 is of the way from A to B.

<h3>Equation for P</h3>

For some fraction q of the distance from A to B, the point P that lies at that fraction of the distance is given by ...

  P = A +q(B -A) = (1 -q)A +qB

<h3>Application</h3>

For q = 3/4, the location of P is ...

  P = (1 -3/4)A + 3/4B = (A +3B)/4

Using the given point coordinates, we have ...

  P = ((-4, -2) +3(4, 10))/4 = (-4 +12, -2 +30)/4 = (8, 28)/4

  P = (2, 7)

8 0
1 year ago
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