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GREYUIT [131]
3 years ago
10

Two lines AB and CD intersect at O. If ∠AOC + ∠COB + ∠BOD = 270°Find the measures of ∠AOC, ∠COB, ∠BOD, ∠DOA.

Mathematics
1 answer:
Kryger [21]3 years ago
3 0

Answer:

  all are 90°

Step-by-step explanation:

Vertical angles are congruent, and linear angles are supplementary, so we have ...

  ∠AOC + ∠COB + ∠BOD = 270°

  180° + ∠BOD = 270°

  ∠BOD = 90°

Since the lines cross at right angles, all of the angles are 90°.

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Answer:

a) Angle XBC = 55 because XY is parallel with BD

b) As given, XB = XC, so that triangle XBC is the equilateral triangle.

As XBC is equilateral triangle, angle XBC is equal to angle XCB

Angle XBC = 55° => Angle XCB = 55°

In a triangle, the total value of three corners are equal to 180°

So that: Angle XBC + Angle XCB + Angle BXC = 180°

=> 55° + 55° + Angle BXC = 180 °

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Suppose the number of hits a webpage receives follows a Poisson distribution. The average number of hits per minute is 2.4. What
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Answer:

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Step-by-step explanation:

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The probability function of a Poisson distribution is:

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