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kvv77 [185]
3 years ago
11

Solve the system of equations and choose the correct answer from the list of options.

Mathematics
1 answer:
Georgia [21]3 years ago
8 0
We can solve this system of equation by reduction method.
  d+e=15
 -d+e=-5
-------------------
      2e=10   ⇒e=10/2=5

-(d+e=15)
 -d+e=-5
-----------------
  -2d=-20   ⇒d=-20/-2=10

therefore: d=10; e=5

Answer: d.(10,5)
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What are the two numbers that go there
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Answer:

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Step-by-step explanation:

Another example would be:

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7 0
2 years ago
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mestny [16]

Answer:

The Third one

Step-by-step explanation:

Because the y is not included in the function ( see some lines ) and x is the same thing but it is larger than -3 and it is included in the function .

I hope that it's a clear solution and explanation.

6 0
3 years ago
Any help would be appreciated
vodomira [7]

Answer:

Total area to be painted in gold = 24000 cm²

Step-by-step explanation:

Total height of the stairs = 120 cm

Total standing stairs = 4

Therefore, height or width of one standing stair as shown in the picture,

= \frac{120}{4}

= 30 cm

Length of every stair has = 100 cm

Every horizontal and vertical stair has the same area.

Area of one stair = Length × Width

                            = 100 × 30

                            = 3000 cm square

There are 4 horizontal and 4 vertical similar stairs to be painted in gold.

Total area to be painted in gold = 8 × Area of one stair

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                                                     = 24000 cm²

Total area to be painted in gold = 24000 cm²

6 0
2 years ago
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