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Katen [24]
3 years ago
11

The mean of 4.8,1.5,6.3,6.7,8.3 ​

Mathematics
1 answer:
Effectus [21]3 years ago
5 0

Answer:

5.52

Step-by-step explanation:

To calculate the mean of a set, all you have to do is divide the sum of all elements in the set by the number of elements in the set. Therefore, the mean for this set would be (4.8 + 1.5 + 6.3 + 6.7 + 8.3) / 5 = 5.52.

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laila [671]

Answer:

B

Step-by-step explanation:

4 0
2 years ago
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ACD is a triangle and B is a point on AC. AB = 8cm and BC is 6cm. Angle BCD = 48° and angle BDC = 50°. (a) Find the length of BD
FromTheMoon [43]

Answer:

  • 5.8206 cm
  • 10.528 cm
  • 23.056 cm^2

Step-by-step explanation:

(a) The Law of Sines can be used to find BD.

  BD/sin(48°) = BD/sin(50°)

  BD = (6 cm)(sin(48°)/sin(60°)) ≈ 5.82064 cm

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(b) We can use the Law of Cosines to find AD.

  AD^2 = AB^2 +BD^2 -2·AB·BD·cos(98°) . . . . . angle ABD = 48°+50°

  AD^2 ≈ 110.841

  AD ≈ √110.841 ≈ 10.5281 . . . cm

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(c) The area of ∆ABD can be found using the formula ...

  A = ab·sin(θ)/2 . . . . . where a=AB, b=BD, θ = 98°

  A = (8 cm)(5.82064 cm)sin(98°)/2 ≈ 23.0560 cm^2

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Angle ABD is the external angle of ∆BCD that is the sum of the remote interior angles BCD and BDC. Hence ∠ABD = 48° +50° = 98°.

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3 years ago
Number of Members
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2 years ago
Please awnser questions, no links, no I dont know 2.
uysha [10]
3 boxes of 12″ =36 = 2 boxes of 18″

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3 years ago
PLEASE HURRY.
hichkok12 [17]

Answer:

i think B.

Step-by-step explanation:

Hope this helps :p

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3 years ago
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