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Liula [17]
2 years ago
14

I'LL GIVE BRAINLIEST IF YOU EXPLAIN THE ANSWER:

Mathematics
2 answers:
USPshnik [31]2 years ago
6 0

Answer:

C) 16 cm^2

Step-by-step explanation:

scale is 1:8 so 2 cm^2x8=16

zavuch27 [327]2 years ago
5 0
D is the answer good luck
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The three lines given below form a triangle. Find the coordinates of the vertices of the triangle.
LenKa [72]

Answer:

  • (3, 5), (1, 2) and (5, 1)

Step-by-step explanation:

Make three systems with pairs of lines and solve them to work out the vertices.

1) <u>Line 1 and line 2</u>

  • -3x + 2y = 1
  • 2x + y = 11

<u>Double the second equation and subtract equations:</u>

  • -3x + 2y - 2(2x + y) = 1 - 2(11)
  • -3x - 4x = 1 - 22
  • -7x = - 21
  • x = 3

<u>Find y:</u>

  • 2*3 + y = 11
  • 6 + y = 11
  • y = 11 - 6
  • y = 5

The point is (3, 5)

2) <u>Line 1 and line 3</u>

  • -3x + 2y = 1
  • x + 4y = 9

<u>Triple the second equation and add up equations:</u>

  • -3x + 2y + 3(x + 4y) = 1 + 3(9)
  • 2y + 12y = 1 + 27
  • 14y = 28
  • y = 2

<u>Find x:</u>

  • x + 4*2 = 9
  • x + 8 = 9
  • x = 1

The point is (1, 2)

3) <u>Line 2 and line 3</u>

  • 2x + y = 11
  • x + 4y = 9

<u>Double the second equation and subtract the equations:</u>

  • 2x + y - 2(x + 4y) = 11 - 2(9)
  • y - 8y = 11 - 18
  • - 7y = - 7
  • y = 1

<u>Find x:</u>

  • x + 4*1 = 9
  • x + 4 = 9
  • x = 5

The point is (5, 1)

8 0
2 years ago
What is the value of x?​
Rasek [7]

Answer:

The horizontal value in a pair of coordinates: how far along the point is. The X Coordinate is always written first in an ordered pair of coordinates (x,y), such as (12,5). In this example, the value "12" is the X Coordinate. Also called "Abscissa"

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you.
makkiz [27]

Answer:

y = 12-(61) is the answer !!

7 0
3 years ago
Is x^2-3x-23 polynomial
umka2103 [35]

Answer:

Yes

Step-by-step explanation:

6 0
3 years ago
Which number sentence shows that the sum of a number and its opposite is 0?
Kazeer [188]

Answer:

A. −4 + 4 = 0

Step-by-step explanation:

-4 + 4 = 0

4 - 4 = 0

So option A will be the answer

3 0
2 years ago
Read 2 more answers
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