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Maksim231197 [3]
3 years ago
14

Factoring by grouping: what is 3x^2+2x-5

Mathematics
1 answer:
joja [24]3 years ago
3 0

Answer:

(x-1)(3x+5)

Step-by-step explanation:

3x^2+2x-5

3x^2+(5-3)x-5

3x^2+5x-3x-5

X(3x+5)-1(3x+5)

(x-1)(3x+5)

Answer is (x-1)(3x+5)

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A dot-com company ships products from three different warehouses (A, B, and C). Based on customer complaints, it appears that 3%
Firlakuza [10]

Answer:

The probability of getting defective product from warehouse C is 0.3448

Step-by-step explanation:

<em>Missing question </em><em>"Assume that Ware houses A, B and C ship 30%, 20% and 50% of the dot-com's sales respectively.</em>

<em />

<em>P(A) = </em>Probability of product that comes from warehouse A

<em>P(B) = </em>Probability of product that comes from warehouse B

<em>P(C) = </em>Probability of product that comes from warehouse C

P(A) =  30% = 0.30, P(B) =  20% = 0.20, P(C) =  50% = 0.50

Let D denotes the number of defective products

P(D|A) = 3% = 0.03

P(D|B) = 5% = 0.05

P(D|C) = 2% = 0.02

The probability of getting defective product from warehouse C is as below using the Bayes Rule

P(C|D) = P(D|C) P(C) / P(D|A)P(A) + P(D|B)P(B) + P(D|C)P(C)

P(C|D) = 0.02 * 0.50 / (0.03*0.30) + (0.05*0.20) + (0.02*0.50)

P(C|D) = 0.01 / 0.009 + 0.01 + 0.01

P(C|D) = 0.01 / 0.029

P(C|D) = 0.3448

Therefore the probability of getting defective product from warehouse C is  0.3448.

3 0
3 years ago
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