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maria [59]
3 years ago
9

Help. 2 answers = brainliest

Mathematics
1 answer:
RideAnS [48]3 years ago
3 0
11
—-
6 making it 1
1–—- i think
6
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Find the area of the equilateral triangle below (remember, this is a regular polygon).
Brilliant_brown [7]

Equilateral triangles have interior angles of measure 60º. AL bisects angle MAY, so triangle ALY has angles 30º, 60º, and 90º. This means AY and LY occur in a ratio of √3 to 1. AY is half of AN, so AY = 9 and LY = 9/√3 = 3√3.

We can split up triangle MAN into 6 triangles with the same area as ALY, whose area is

1/2 * AY * LY = 1/2 * 9 * 3√3 = (27√3)/2

so that MAN has area

6 * (27√3)/2 = 81√3, or about 140.296.

Alternatively, we can observe that ML has the same length as AL, which by the Pythagorean theorem has length

AL = √(AY^2 + LY^2) = 6√3

Then MAN has area

1/2 * AN * (ML + LY) = 1/2 * 18 * (6√3 + 3√3) = 81√3

4 0
3 years ago
Prove that the two circles shown below are similar. (10 points) Circle B Has A Center Of (-1, 5) And A Radius Of 4. Circle D Has
nexus9112 [7]

All circles are similar shapes.

However, we can prove that these circles are similar by finding their radius-circumference ratios.

<h2>Circle B</h2>

Radius:

  • 4 units

Circumference:

  • C=2\pi r\\C=2\pi (4)\\C=8\pi

Radius/circumference ratio:

  • \dfrac{4}{8\pi}\\\\\dfrac{1}{2\pi}

<h2>Circle D</h2>

Radius:

  • 2 units

Circumference:

  • C=2\pi r\\C=2\pi (2)\\C=4\pi

Radius/circumference ratio:

\dfrac{2}{4\pi}\\\\\dfrac{1}{2\pi}

The radius/circumference ratio for both the circles is \dfrac{1}{2\pi}, thus making the two circles similar.

8 0
2 years ago
Will give brainliest!!! How would (512x^6 y^14 + x^6 y^14) turn into 513 x^6 y^14 why are you adding a 1 to 512? Aren't you supp
Aleksandr-060686 [28]
Because they have like-exponents (the exponents of the x is the same number, x^6) you can treat both values sort of like whole numbers. 512x^16 + 1x^16 making it 513x^16. Same thing with the y, it should be 1y^14+ 1y^14 = 2y^14
7 0
3 years ago
Solve using the distributive property: 28 x 9
patriot [66]

Answer:

252

Step-by-step explanation:

9 x 28 = (9 x 20) + (9 x 8)

9 x 20 = 180

9 x 8 = 72

180 + 72 = 252

9 x 28 = 252

(hope this helps can I pls have brainlist (crown) ☺️)

7 0
3 years ago
please help me ahhh im doing 8th grade math with pythagorean theorem i really need help please 15 points!!
rosijanka [135]
184^2+b^2= 545^2

33856+ b^2= 297,025

b^2= 263169

b= 513

The length is 513 ft
6 0
3 years ago
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