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Maksim231197 [3]
3 years ago
9

What is the value of x in 4x + 11 = 3x +1

Mathematics
1 answer:
o-na [289]3 years ago
6 0

Answer:

x = -10

Step-by-step explanation:

<h3>4x + 11 = 3x + 1</h3><h3>-3x         -3x</h3><h3>____________</h3><h3>x + 11 = 1</h3><h3>   -  11  -11</h3><h3>____________</h3><h3>x = -10</h3>
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Step-by-step explanation:

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The life of a semiconductor laser at a constant power is normally distributed with a mean of 7,000 hours and a standard deviatio
Scrat [10]

This question not incomplete

Complete Question

The life of a semiconductor laser at a constant power is normally distributed with a mean of 7,000 hours and a standard deviation of 600 hours. If three lasers are used in a product and they are assumed to fail independently, the probability that all three are still operating after 7,000 hours is closest to? Assuming percentile = 95%

Answer:

0.125

Step-by-step explanation:

Assuming for 95%

z score for 95th percentile = 1.645

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After 7000 hours = P > 7000

= 1 - P(x < 7000)

= 1 - 0.95

= 0.05

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(P > 7000)³

(0.05)³ = 0.125

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3 years ago
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