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vladimir1956 [14]
2 years ago
7

What is the place value of the 4 in 4.09?

Mathematics
1 answer:
MaRussiya [10]2 years ago
5 0

Answer:

B: Ones.

Step-by-step explanation:

Because this number is 4.09, and the decimal is right next to the 4, that means that it is in the ones place. Decimals are always adjacent on the right to the ones place.

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(a) A lamp has two bulbs, each of a type with average lifetime 1400 hours. Assuming that we can model the probability of failure
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Answer:

For first lamp ; The resultant probability is 0.703

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Let X be the lifetime hours of two bulbs

X∼exp(1/1400)

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P(X<x)=1−e−1/1400x

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The resultant probability is 0.703

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Then the Z = X + Y will follow gamma distribution that is,

X+Y=Z∼gamma(2,1/1400)

2λZ∼

X+Y=Z∼gamma(2,1/1400)

2λZ∼χ2α2

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