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Harlamova29_29 [7]
3 years ago
15

A Pest control company sprays insecticide around the perimeter of a 180 ft by 180 ft building. If the spray costs $.11 per foot,

how much did the job cost to the nearest dollar?
Mathematics
1 answer:
andreev551 [17]3 years ago
5 0
P = 4a.....this is the perimeter of a square
P = 4(180)
P = 720 ft

and if the spray cost 0.11 per ft......720 * 0.11 = 79.20 rounded to the nearest dollar is $ 79 <==
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Dvinal [7]

Answer:

20%

Step-by-step explanation:

A pair of jeans cost $45  before the sale.

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Then

$45 - 100%

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Write a proportion:

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Cross multiply:

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3 0
3 years ago
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Dovator [93]

Answer:

There is a 0.73% probability that Ben receives a total of 2 phone calls in a week.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given time interval.

The problem states that:

The number of phone calls that Actuary Ben receives each day has a Poisson distribution with mean 0.1 during each weekday and mean 0.2 each day during the weekend.

To find the mean during the time interval, we have to find the weighed mean of calls he receives per day.

There are 5 weekdays, with a mean of 0.1 calls per day.

The weekend is 2 days long, with a mean of 0.2 calls per day.

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\mu = \frac{5(0.1) + 2(0.2)}{7} = 0.1286

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P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 2) = \frac{e^{-0.1286}*0.1286^{2}}{(2)!} = 0.0073

There is a 0.73% probability that Ben receives a total of 2 phone calls in a week.

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mamaluj [8]

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Step-by-step explanation:

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LenKa [72]

Answer: $12,916.70

Step-by-step explanation:

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If Mel pays within the discount period:

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Step-by-step explanation:

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