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barxatty [35]
3 years ago
14

An arc length is a fractional part of the

Mathematics
1 answer:
LenaWriter [7]3 years ago
4 0

Answer:

<u>Each of the 4 sectors have an area:</u>

  • πR²/8 - πr²/8, where
  • R = 28/2 - 2 = 12 in
  • r = 6/2 = 3 in

<u>Find the area:</u>

  • A = π/8(12² - 3² ≈ 53 in²

<u>Outer perimeter of the frame:</u>

  • P = d + πd/2 =28( 1 + π/2) ≈ 72 in
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Step-by-step explanation:

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3 years ago
Which shows like terms from the expression? 9 + 5 + 7x2 + 3 x2y + 2x2 3 x2y and 2x2 7x2, 3 x2y, and 2x2 9 and 5 2, 3, 5, and 9
snow_lady [41]

Answer:

9 and 5.

Step-by-step explanation:

So we have the expression:

9+5+7x^2+3x^2y+2x^2

In order to combine like terms, the variables must be <em>exactly</em> the same: not one less, not one more.

3x²y and 2x² <em>cannot</em> be combined because the first value has a y.

7x², 3x²y, and 2x² also <em>cannot </em>be combined because the second value has a y.

9 and 5 is the only one that can be combined because they are just integers. They can be added to be 14.

2, 3, 5, and 9 <em>cannot</em> be combined because the 2 and the 3 are tied to the variables as coefficients. They are not constants.

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3 years ago
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Vinil7 [7]

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The elephant weighs 9,000 more lb than the giraffe

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A isotope has a Half life of 1000 years. If you start with 1 kilogram of this isotope how much will remain after 400 years? 4000
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Answer:If you begin with a 1 gram sample of the isotope, at the end of 1000 years you would have. 1 gram x (12) = 12 gram would remain.

Step-by-step explanation:

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3/5

Step-by-step explanation:

3 and 4 and 5 are more than 2 so they are 3 quantities and the total of the quantities are 5 so the answer should be 3/5

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