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3 years ago

20. A pool holds 1440 cubic feet of water, the city charges $1.75 per cubic meter of water used.

Mathematics

2 answers:

Helen [10]3 years ago

7 0

Answer:Conversion units

Step-by-step explanation: 1 ft^3= 0.028m^3 .: 1440ft^3=40.776m^3, so $1.75x40.776=$71.358~ $71.36.:

kotegsom [21]3 years ago

6 0

Answer:

$71.36

Step-by-step explanation:

1 foot = 0.3048 metros

1 cubic feet = (0.3048metros)³ = 0.02932 cubic meters (aprox.)

1440 cubic feet = 1440*0.02932 = 40.7763 m

$1.75 por cubic meter:

1.75*40.7763 = $71.36

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lbvjy [14]

Answer:

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Step-by-step explanation:

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The parameter λ of the exponential distribution is the inverse of the mean, so its λ=0.4 h^-1.

The probabity that a repair time exceeds k hours can be written as:

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(b) the conditional probability that a repair takes at least 10 hours, given that it takes more than 9 hours?

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In this case, the conditional probability that a repair takes at least 10 hours, given that it takes more than 9 hours is equal to the probability that a repair takes at least (10-9)=1 hour.

$P(t>10|t>9)=P(t>1)$

$P(k>1)=e^{-0.4*1}=0.67$

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Answer:

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Step-by-step explanation:

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Answer:

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