4 years ago

2x+5y-10=0 -4x+3y=-8

1 answer:

5 0

X = 35/13 and y = 12/13. Plz plz plz give me brainiest answer I only need 4 more to rank up. If u do I will show my work.

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In the town of Maplewood a certain type of DVD player is sold at just two stores, 43% of the sales 13) are from store A and 57%

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Answer:

Option A 0.312 is right

Step-by-step explanation:

Given that iN Maplewood a certain type of DVD player is sold at just two stores, 43% of the sales 13) are from store A and 57% of the sales are from store B. 2.4% of the DVD players sold at store A are defective while 4.0% of the DVD players sold at store B are defective.

Prob for any random item form store to be defective = Prob from A and defective +Prob from B and defective

= $0.43(0.024)+0.57(0.04)\\=0.03312$

Prob it came from A and defective = 0. $0.43(0.024)=0.01032$

If Kate receives one of these DVD players as a gift and finds that it is defective, what is the probability that it came from store A

= $\frac{0.01032}{0.03312} \\=0.312$

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