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velikii [3]
3 years ago
11

Please can anyone help me with this question? I'm really struggling with it

Mathematics
1 answer:
xenn [34]3 years ago
7 0

Answer:

83.9°

Step-by-step explanation:

Pythagorean theorem, the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, a2 + b2 = c2.

a= 13 cm

a2= 169cm

b= 4cm

b2=16 cm

a2+b2= 185cm (c2)

c=13.6cm

after wards use the law of cosines and c= 83.9°

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A box has two balls, one white and one red. We select one ball, put it back in the box, and select a second ball (sampling with
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Answer:

P (T) = 1/4

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Step-by-step explanation:

Let F the event of picking the white ball first

P (F)= 1/2   ( picking the white ball first)

Let T be the event of getting the white ball twice,

P (T) = P( getting white ball) * P( getting white ball)

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Here P(T∩F) = P(T) because the probability of getting the white balls is the same as probability of getting the white ball first  both the times.

P ( T | F ) = P (T∩F)/ P(F)

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Read 2 more answers
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