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omeli [17]
2 years ago
14

If a+1/a=3 then find the value of a-1/a​

Mathematics
1 answer:
kenny6666 [7]2 years ago
4 0

Answer:

  • √5

Step-by-step explanation:

<u>Given a + 1/a = 3, find its square:</u>

  • a² + 2a*1/a + 1/a² = 9
  • a² + 1/a² = 9 - 2 = 7

<u>Now find the square of (a - 1/a):</u>

  • a² - 2a*1/a + 1/a² =
  • a² + 1/a² - 2

<u>Substitute the value from the first square:</u>

  • 7 - 2 = 5

<u>Since (a - 1/a)² = 5, its square root is:</u>

  • a - 1/a = √5
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Answer:

(D)

<u>Use the law of sines:</u>

  • 13 / sin x = 12 / sin 67°
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(E)

<u>Find the third angle:</u>

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2 years ago
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Elanso [62]

Answer:

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Step-by-step explanation:

Every circumference is in the form:

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5 0
2 years ago
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5+5 you get 39 points
Nina [5.8K]

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10

Step-by-step explanation:

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What is the diameter of a circle that has an area of 452.16 mm 2
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White raven [17]

Answer:

97in³

Step-by-step explanation:

L = 5.5, W = 2, H = 5

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