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andreev551 [17]
3 years ago
8

Plz read and answerrrrrrrrrrr

Mathematics
1 answer:
natulia [17]3 years ago
5 0

Answer:

16.7%.

Step-by-step explanation:

There are initially 24 + 15 + 8 = 47 pencils in the bag.

Take a pencil out of this bag of 47 pencils. 15 out of the 47 pencils blue. Let A represent the event of getting a blue pencil on the first pick. The probability of getting a blue pencil is:

\displaystyle P(A) = \frac{15}{47}.

There are now 47 - 1 = 46 pencils left in the bag. However, given that the first pencil removed from the bag is blue, the number of red pencils in the bag will still be 24. Take another pencil out of this bag of 46 pencils. Let B represent the event of getting a red pencil on the second pick. The possibility that the second pencil is red given that the first pencil is blue will be:

\displaystyle P(B|A) = \frac{24}{46}.

The question is asking for the possibility that the first pencil is blue and the second pencil is red. That is:

\displaystyle P(A\cap B) = P(A) \cdot P(B|A) = \frac{15}{47}\times \frac{24}{46} = 0.166512 \approx 16.7\%.

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Read 2 more answers
Please help with 32 and 33, thank you.
PtichkaEL [24]

Answer:

32. ∛((x-7)/4) = f^(-1)(x)

33. -10x - 9

Step-by-step explanation:

32. We want to switch f(x) and x, and then solve for f(x) to get the inverse.

x = 4f(x)³ + 7

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the second answer is correct

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2(-5x-7) + 5

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the second answer is correct

4 0
3 years ago
The price of a house DECREASED from $82500 to $77500. Calculate the PERCENTAGE DECREASE
Igoryamba

Answer:

6.06%

Step-by-step explanation:

percentage \: decrease \\  \\  =  \frac{82500 - 77500}{82500}  \times 100 \\  \\  =  \frac{5000 \times 100}{82500}  \\  \\  =  \frac{500000}{82500}  \\  \\  = 6.06060606 \\  \\  = 6.06 \%

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