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3 years ago

Explain how u would find the sum of 46+7

Mathematics

2 answers:

klemol [59]3 years ago

7 0

46+7 is 53 because 46= 10 +36 10+7= 17 17+36=53

stira [4]3 years ago

5 0

46 + 7 = 53

First set up the problem with 46 on top and 7 on the bottom.

Next, Add 7 + 6. 7 + 6 = 13.

Now, keep the 3 ( put it at the bottom) then carry the one (put it over the 4 to indicate that we need to add one to 4).

Last step. All we have to do is add 4 + 1. 4 + 1 = 5.

Now add 5 to the bottom ( in the tens place).

Answer: 53.

Happy studying ^-^

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3 years ago

A manufacturer has determined that a model of its washing machine has an expected life that is Exponential with a mean of four y

krek1111 [17]

Complete question:

A manufacturer has determined that a model of its washing machine has an expected life that is Exponential with a mean of four years to failure and irrelevant board burn-in period. He wants to testthe system and complete data collection. Find the probability that one of these washing machines will have a life that ends: (Note you can find the reliability of the washing machine life)

a) After an initial four years of washing machine service

b) Before four years of washing machine service are completed

c) Not before six years of washing machine service.

Answer:

a) 0.3679

b) 0.6321

c) 0.2231

Step-by-step explanation:

Given:

Mean, u= 4

/\ = 1/u

= 1/4 = 0.25

The cummulative distribution function, will be:

For x≥0,

$F(x) = 1 - e^-^0^.^2^5^X$

$P(x$

a) After an intial four years:

$P(x>4) = 1-(1-e^-^0^.^2^5^*^4^.^0)$

P(x>4) = 0.3679

b) Before four years:

$P(x$

P(x<4) = 0.6321

c) Not before 6 years:

$P(x>6) = 1-(1-e^-^0^.^2^5^*^4^.^0)$

P(x>6) = 0.2231

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3 years ago