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kherson [118]
3 years ago
13

A football is made of 12 black panels and 20 white panels. There is a joint whenever two panels meet along the edge how many joi

nts are there?
Mathematics
1 answer:
oee [108]3 years ago
8 0

Answer:

12+20=32

Step-by-step explanation:

None Hope this helps

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Mr. Gonzales is replacing a cylindrical air-conditioning duct. He estimates the radius of the duct by folding a ruler to form tw
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Answer:

  • <em><u>5.6875 in</u></em>

Explanation:

At the point of tangency, the <em>tangent </em>to a circle and the <em>radius</em> form a right triangle (the radius is perpendicular to the tangent).

Here you are given the length of the tangent (6in), and the distance from the bisected vertex to the circle (2.75 in)

I tried to upload the drawing but the tool is not allowing it now.

In the figure:

  • The length of the tangent (6 in) is one leg of the triangle
  • The distance from vertex and the circle (2.75in)  along with the radius forms the hypotenuse of the right triangle: 2.75 + r.
  • The other leg is the radius, r.

Then, you can use Pythagorean theorem:

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Solve:

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  • 5.5r = 36 - 7.5625
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The solution is in inches: r = 5.6875 inches ← answer

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