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noname [10]
3 years ago
14

A homeowner has an octagonal gazebo inside a circular area. Each vertex of the gazebo lies on the circumference of the circular

area. The area that is inside the circle, but outside the gazebo, requires mulch. This area is represented by the function m(x), where x is the length of the radius of the circle in feet. The homeowner estimates that he will pay $1.50 per square foot of mulch. This cost is represented by the function g(m), where m is the area requiring mulch.

Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
5 0

Answer:   1.50(\pi x^2-2\sqrt{2}x^2)

Step-by-step explanation:

Here the function that shows the total area of mulch,

m(x)=\pi x^2-2\sqrt{2}x^2

Also, the function that shows the total cost mulch that requires,

g(m) = 1.50 m

By putting the value of m,

We get,

\implies g(m) = 1.50( \pi x^2-2\sqrt{2}x^2 )

Where x is the radius of the circle.

Thus, First option is correct.

svlad2 [7]3 years ago
4 0

Answer:

First Option

Step-by-step explanation:

Just took quiz

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Birth weights at a local hospital have a Normal distribution with a mean of 110 oz and a standard deviation of 15 oz. The propor
OLga [1]

Answer:

The proportion of infants with birth weights between 125 oz and 140 oz is 0.1359 = 13.59%.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

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The proportion of infants with birth weights between 125 oz and 140 oz is

This is the pvalue of Z when X = 140 subtracted by the pvalue of Z when X = 125. So

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The proportion of infants with birth weights between 125 oz and 140 oz is 0.1359 = 13.59%.

4 0
3 years ago
If a=(-1, -3) and b=(11, -8) what is the length of ab?
professor190 [17]

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Step-by-step explanation:

(-1, -3 )    Find the difference between the x values and y values.

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