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djverab [1.8K]
3 years ago
5

8. You find the probability P(A or B) by using the equation PA or B) = P(A) + P(B) - P(A and B).

Mathematics
1 answer:
iragen [17]3 years ago
7 0

Step-by-step explanation:

When you add P(A) and P(B), the overlap P(A and B) is counted twice.  So you must subtract it to get the probability P(A or B).

If A and B are disjoint, then P(A and B) = 0, so it isn't necessary to subtract.

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PLEASE HELP IVE ASKED THIS QUESTION 3 TIMES PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!​
worty [1.4K]

THEOREM:

  • h² = p² + b² where h is hypotenuse, b is base and p is perpendicular.

ANSWER:

[3] By pythagorean theorem,

  • x² = 14² + 9²
  • x² = 196 + 81
  • x² = 277
  • x = √277
  • x = 16.64 rounded.

[4] By pythagorean theorem,

  • x² = 32² + 24²
  • x² = 1024 + 576
  • x² = 1600
  • x = √1600
  • x = 40.

[5] By pythagorean theorem,

  • (2x)² = 21² – 12.6²
  • 4x² = 441 – 158.76
  • 4x² = 284.24
  • x² = 284.24/4 = 70.56
  • x = √70.56
  • x = 8.4

[6] By tangent property,

  • 7x – 29 = 2x + 16
  • 7x – 2x = 16 + 29
  • 5x = 45
  • x = 9.

So, WX = 7(9) – 29 = 63 – 29

  • WX = 34
4 0
3 years ago
Help me please,Thanks;)
Sindrei [870]
I think its the second choice

8 0
3 years ago
Please help me !!!!!!!!!!!!!!!!!!!
Grace [21]

Answer:

5) arccos A = 28°

6) arcsin A = 53°

Step-by-step explanation:

5) cos A = 30/34

6) sin A = 32/40

5 0
3 years ago
Read 2 more answers
What number is composite 19,23,33,37,
VikaD [51]

Answer:

33

Step-by-step explanation:

33 can be divided evenly by numbers other than one or itself

3 0
3 years ago
Let h(x) = x + 6 and g(x) = x^2 - 4x + 2<br> Find h(x) · g(x)
kenny6666 [7]

Answer: x³+2x²-22x+12

Step-by-step explanation:

the product of functions: (hg)(x)

Use FOIL to solve this (First Outer Inner Later)

 (x+6)(x²-4x+2)

=x³-4x²+2x+6x²-24x+12

=x³-4x²+6x²+2x-24x+12

=x³+2x²-22x+12

3 0
3 years ago
Read 2 more answers
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