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3 years ago

Please solve this problem. Thnaks(3x-4)²

Mathematics

2 answers:

Black_prince [1.1K]3 years ago

8 0

(3x-4)² is
(3x-4)(3x-4)
FOIL it.
9x²+3x-4+3x-4+16
simplify
9x²+6x+8

Firdavs [7]3 years ago

6 0

So you just write it out as (3x-4)(3x-4) and then you FOIL, which would give you 9x^2-24x+16

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Step-by-step explanation:

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

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The probability that part A works for one year is 0.8 and the probability that part B works for one year is 0.6.

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This means that: $P(A \cup B) = 0.9$

We also have that:

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$0.9 = 0.8+0.6 - P(A \cap B)$

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$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.5}{0.8} = 0.625$

0.625 = 62.5% probability that part B works for one year, given that part A works for one year.

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