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STALIN [3.7K]
3 years ago
9

8x + y=-16 -3x + y=-5

Mathematics
2 answers:
Molodets [167]3 years ago
6 0
Hope this helps with the answer to your question ;)

crimeas [40]3 years ago
3 0

Answer:

(-1,-8)

Step-by-step explanation:

8x + y=-16

-3x + y=-5

Multiply the second equation by -1

3x - y=5

Add this to the first equation

8x + y=-16

3x - y=5

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

11x    = -11

Divide each side by 11

11x/11 = -11/11

x = -1

Now we need to find y

-3x +y = -5

-3(-1) +y = -5

3+y = -5

Subtract 3 from each side

3-3+y = -5-3

y = -8

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The answer is B

Step-by-step explanation:

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3 years ago
Decompose the number 419 in 10 models
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I think this is what you're asking.. If not.. I'm sorry.

5 0
3 years ago
Solve by using related function 1/2x^2 -2=0
Thepotemich [5.8K]

Answer:

1/2x^2-2=0

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4 0
3 years ago
Please help to solve this please with steps.
Blababa [14]

Answer:

284cm^2

Step-by-step explanation:

first, we split up the shape into seperate sections that we can easily find the areas of.

i will draw vertical lines in the bottom left and right, leaving me with 2 seperate rectangles and 1 irregular pentagon.

we know that these rectangles are 4x8cm, so we do 4 * 8 which gives us 32.

there are 2 of these, so 32 x 2 = 64cm^2.

now, i chose to seperarte the pentagon into a rectangle and a triangle,

and i found the height and width of the rectangle to be (18 - (4+4)) x (8+7), or 10 x 15.

the area of the rectangle is 150cm^2.

now, for the triangle.

the line through the centre of th shape is 22cm long, but we only want the part in the triangle. luckily, there are mesurements that can help us with this.

8 + 7 = 15.

22 - 15 = 7.

now we know that the height of the triangle is 7 cm.

from earlier, we also know the base, which is 10cm.

7 x 10 = 70cm^2.

now we add all these together:

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4 0
3 years ago
Which deal is better? 10 slices of cheese at $2.48 or 12 slices of cheese at $3.18?
rusak2 [61]

Answer: 10 Slices

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10 slices of cheese is about $0.24 a slice.

12 Slices of cheese is about $0.26 a slice.

So 10 slices is the better deal.

3 0
2 years ago
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