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rjkz [21]
2 years ago
5

Do u know what 42 ÷____= 0.042 is I need help

Mathematics
1 answer:
Bingel [31]2 years ago
3 0

Answer:

1000

Step-by-step explanation:

Doing this on a calculator yields 1000.

Alternatively, do part or all of the problem in your head:

Rewrite 42 ÷____= 0.042 as


  42

------------

0.042

and move the decimal points 3 place to the right:

42 becomes 42000, and 0.042 becomes 42.  Thus, we have:

42000

------------ = 1000

    42

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LUCKY_DIMON [66]

Answer:

0.7026

Step-by-step explanation:

Let X denote the lifetime of light bulb. Given X \sim Exp(\lambda) where the mean is E(X) = 340 =\frac{1}{\lambda} \implies \lambda = \frac{1}{340} = 0.00294.

Recall that,

\displaystyle P(X>x) = 1 - \int_0^x e^{-\lambda x} = 1 - (1 - e^{-\lambda x} = e^{-\lambda x}

\displaystyle P(X>220 | X>100) = \frac{P(X>220,X>100)}{P(X>100)} = \frac{e^{-\lambda \times 220}}{e^{-\lambda \times 100}} = \frac{0.5236}{0.7452} = 0.7026

7 0
3 years ago
How to do it and how to work it out and stuff
gogolik [260]
Oof I had that question and I was so stuck on it I still dont know it till this day ah life is hard
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To rent an instrument from the school it costs a $50 insurance fee and then $350 per day of use. If Sally rents her instrument f
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Answer:

$2,500

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If its wrong im sorry

5 0
2 years ago
Read 2 more answers
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Explanation:
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