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expeople1 [14]
3 years ago
7

-5x=y+2 2(2x-1)=3-3y What is the solution (x, y) to the system of equations above?

Mathematics
1 answer:
ella [17]3 years ago
6 0

(-1, 3)

Step-by-step explanation:

1st step: put x and y together

-5x = y + 2

5x + y = -2

2 × (2x - 1) = 3 - 3y

4x - 2 = 3 - 3y

4x + 3y = 5

2nd step: make the one similar (x or y)

5x + y = -2 ×(+3)

4x + 3y = 5 ×( -1)

15x + 3y = -6

-4x - 3y = -5

3rd step: collection process

15x + 3y = -6

-4x - 3y = -5

11x = -11

x = -1

The last step: write -1 instead of x in any equation

-5x = y + 2

-5×(-1) = y + 2

5 = y + 2

y = 3

The answer is ( -1, 3)

My English is not good, I hope this will help you..

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Step-by-step explanation:

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3 years ago
PLS HELP BRAINLIEST FOR CORRECT ANSWER+20 POINTS
svetoff [14.1K]

Answer:

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Step-by-step explanation:

All of the little cubes have side length 2"  Thus, the 11" height of the box cannot be used entirely:  we waste the top 1" because the five layers of little cubes reach only to 10" from the bottom.

Start at the bottom of the box.  The dimensions of the bottom are 12" by 8".  Along the longer side we can lay 6 blocks (which add up to 12" and are 2" wide.  We can add 3 more such rows to fill the available 8" width of the box bottom.  That's 6*4, or 24 blocks.

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3 years ago
What is the value of AB?
solniwko [45]

Answer:

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Step-by-step explanation:

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4 years ago
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muminat

Answer:

43.5 meters

Step-by-step explanation:

Area of regular hexagon =

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3 years ago
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