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AlekseyPX
2 years ago
10

It’s not B can someone plz help me with this it will be appreciated I’m really confused

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

Answer:

83.4

Step-by-step explanation:

Area of a Regular Polygon: L (of side) times apothem (height) x 1/2

L : 13.9

Looking at the triangle we can assume the height would be 12 since its logical that 3 of the 4 lines can fit in the middle of the triangle.

H: 12

13.9 x 12 = 166.8

166.8/2 = 83.4

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The area of each triangular face of this right triangular prism is 8cm^2(squared).
otez555 [7]
Nothing is shown.
The triangle is a right triangle, 9, 12 & 15.
The triangle's area = b*h/2 = 9*12/2 = 54 sq meters each end.

------------
The 3 rectangles are 10 by 9, 12 & 15
Area of the 3 = 10*(9 + 12 + 15) = 360 sq meters
-----
Total area = 360 + 2*54
= 468 sq meters

8 0
3 years ago
F'(-7, 13) was dilated by a scale factor of 2 about (-2, -5), the resulting image is___
AveGali [126]

The resulting image of the point F(x, y) = (- 7, 13) is F'(x, y) = (- 12, 31).

<h3>What is the resulting image of a point by rigid transformation?</h3>

In this problem we have a point that has to be transformed by a kind of rigid transform known as dilation, which is defined by the following equation:

P'(x, y) = O(x, y) + k · [P(x, y) - O(x, y)]             (1)

Where:

  • O(x, y) - Center of dilation
  • P(x, y) - Original point
  • P'(x, y) - Image
  • k - Scale factor

If we know that O(x, y) = (- 2, - 5), F(x, y) = (- 7, 13) and k = 2, then the resulting image is:

F'(x, y) = (- 2, - 5) + 2 · [(- 7, 13) - (- 2, - 5)]

F'(x, y) = (- 2, - 5) + 2 · (- 5, 18)

F'(x, y) = (- 2, - 5) + (- 10, 36)

F'(x, y) = (- 12, 31)

The resulting image of the point F(x, y) = (- 7, 13) is F'(x, y) = (- 12, 31).

To learn more on rigid transformations: brainly.com/question/28004150

#SPJ1

3 0
1 year ago
Answer???????????????
Harlamova29_29 [7]

the answer correct is (5,3)

7 0
3 years ago
1. (x+y)2 when x= −3, y= 14
Vikentia [17]

Answer:

1.

(x+y)2\\ (-3+14)2\\ -6+28\\ 22\\ \\

2.

-2x+17\\ -2(8)+17\\ -16+17\\ 1

3.

10-3m\\ 10-3(5)\\ 10-15\\ -5

6 0
3 years ago
1.3 billion people live on?
Lunna [17]

Answer:

1.25

Step-by-step explanation:

In India

4 0
3 years ago
Read 2 more answers
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