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lianna [129]
3 years ago
9

Let A and B be two disjoint events such that P(A) = 0.47 and P(B) = 0.3. What is P(A or B)?

Mathematics
2 answers:
Alchen [17]3 years ago
6 0
<h3>Answer:  0.77</h3>

Work Shown:

P(A or B) = P(A) + P(B)

P(A or B) = 0.47 + 0.30

P(A or B) = 0.77

Notes:

  • The formula only works if A and B are disjoint, aka mutually exclusive
  • If A and B are not disjoint, then use this formula: P(A or B) = P(A) + P(B) - P(A and B)
GrogVix [38]3 years ago
4 0

Answer:

P(A or B) = 0.77

Step-by-step explanation:

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What is an equation in point-slope form for the line perpendicular to y = 7x + 14 that contains (3, –7)?
umka21 [38]

The equation of the perpendicular line is y + 7 = -1/7(x - 3)

<h3>How to determine the line equation?</h3>

The equation is given as

y = 7x + 14

Also, from the question

The point is given as

Point = (3, -7)

The equation of a line can be represented as

y = mx + c

Where

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By comparing the equations, we have the following

m = 7

This means that the slope of y = 7x + 14  is 7

So, we have

m = 7

The slopes of perpendicular lines are opposite reciprocals

This means that the slope of the other line is -1/7

The equation of the perpendicular lines is then calculated as

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y = -1/7(x - 3) - 7

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y + 7 = -1/7(x - 3)

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Read more about linear equations at

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