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kompoz [17]
2 years ago
12

Need a lil help please

Mathematics
1 answer:
Georgia [21]2 years ago
3 0

Answer:

  • B(2, 4)

Step-by-step explanation:

<u>Given points:</u>

  • A(-1, -9) and M(0.5, -2.5)

Let the coordinates of B are (x, y)

<u>Use midpoint formula to determine the point B:</u>

  • 0.5 = (- 1 + x)/2 ⇒ 1 = -1 + x ⇒ x = 1 + 1 = 2
  • -2.5 = (-9 + y)/2 ⇒ -5 = -9 + y ⇒ y = -5 + 9 = 4

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<h3>Perimeter and area of the triangle giving the equation of a line</h3>

First we will plot the giving lines, determine the point of intersection and then use the Pythagoras theorem to determine the dimension of the right triangle.

From the given equation of the lines, the points of intersection of the line are (x₁, y₁) = (- 0.4, 5.2), (x₂, y₂) = (-0.8, 4.4) and (x₃, y₃) = (0, 4)

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For the height

h = √((- 0.4) - (- 0.8))² + (5.2 - 4.4)²

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For the hypotenuse

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<h3>Determine the Perimeter and area</h3>

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Learn more on area and perimeter of triangles here: brainly.com/question/21511715

#SPJ1

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