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Morgarella [4.7K]
3 years ago
11

Need help thanks I’ll give brainiest or whatever it’s called

Mathematics
2 answers:
ANTONII [103]3 years ago
6 0

Answer:

∠1 = 144°

∠2 = 144°

∠3 = 36°

∠4 = 90°

∠5 = 144°

∠6 = 36°

∠7 = 144°

∠8 = 90°

Sloan [31]3 years ago
5 0

Answer:

Step-by-step explanation:

Line n is a straight line. The sum of the angles on a straight line is 180 degrees. It means that

∠7 + 36 = 180

∠7 = 180 - 36 = 144 degrees

Vertically opposite angles are equal. It means that

∠3 = 36 degrees

∠5 = ∠7 = 144 degrees

Since line m and line n are parallel lines, corresponding angles are equal.

∠5 and ∠2 are corresponding angles. Therefore

∠2 = ∠5 = 144 degrees

∠6 and ∠36 are corresponding angles. Therefore

∠6 = 36 degrees

∠6 + ∠1 = 180 degrees

∠1 = 180 - 36

∠1 = 44 degrees

∠8 + 90 = 180

∠8 = 180 - 90

∠8 = 90 degrees

∠4 + 90 = 180

∠4 = 180 - 90

∠4 = 90 degrees

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Answer:

Step-by-step explanation:

Problem One

Perimeter is in meters not square meters. The equation is

2*(6.8+x) + 2*12.5= 47                Remove the brackets. Combine like terms  

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Answer D

Problem 2

This problem is asking that you calculate the perimeter of a swimming pool.

The two semicircles on the ends make a whole circle.

The diameter of the semicircles is obtained from the difference of the two given lengths.

The rectangle has a length of 12. The length of the rectangle and the 2 semicircles is 16. The difference is 4. You could divide this by 2 to get the radius. I would just leave it as the diameter.

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Answer A

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This is the circle inside the square.

The radius of the circle = 9

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The area of the square = s^2  where s = 18

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The area of the Shaded area = 324 - 251.34 = 69.66

Answer C

Problem 4

b1 = 5

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h = 4.5

Formula

Area = (b1 + b2 ) * 4.5/2

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Area = 16.5 * 4.5 / 2

Area = 74.25/2

Area = 37.125

Answer D

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