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3 years ago

What’s the answer 6x=4x+140

2 answers:

6 0

1) given 6x = 4x + 140

2) subtract 4x from both sides => 6x - 4x = 4x - 4x + 140

=> 2x = 140

3) divide both members by 2 => 2x / 2 = 140 / 2

=> x = 70

4) Answer: x = 70

Alecsey [184]3 years ago

6 0

I believe it is 70 ...

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3 years ago

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3 years ago

certain computer virus can damage any file with probability 35%, independently of other files. Suppose this virus enters a folde

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Answer:

0.623 is the probability that between 800 and 850 files get damaged.

Step-by-step explanation:

We are given the following information:

We treat virus can damage computer as a success.

P( virus can damage computer) = 35% = 0.35

The conditions for normal distribution are satisfied.

By normal approximation:

$\mu = np = 2400(0.35) = 840\\\sigma = \sqrt{np(1-p)} = \sqrt{2400(0.35)(1-0.35)} = $$23.36$

We have to evaluate probability that between 800 and 850 files get damaged.

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0.623 is the probability that between 800 and 850 files get damaged.

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