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3 years ago

A 7m wide path is to be constructed all around and outside a circular park of diameter

Mathematics

2 answers:

Assoli18 [71]3 years ago

8 0

Answer:

392m^2

Step-by-step explanation:

as the length = diameter of the circular park

then

Area = length * width = 56 * 7 = 392m^2

Talja [164]3 years ago

7 0

Answer:

your answer is in this attachment

Step-by-step explanation:

hope it's helpful to you

have a great day ahead buddy

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Evaluate the expression!

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Answer:

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Step-by-step explanation:

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3 years ago

Which of the following is an example of simple harmonic motion?

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An automobile manufacturer claims that its van has a 40.3 miles/gallon (MPG) rating. An independent testing firm has been contra

vovikov84 [41]

Answer:

The value of the test statistic is -2.64.

Step-by-step explanation:

The test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the expected(claimed) mean, $\sigma$ is the standard deviation and n is the size of the sample.

An automobile manufacturer claims that its van has a 40.3 miles/gallon (MPG) rating.

This means that $\mu = 40.3$

After testing 250 vans, they found a mean MPG of 39.9. Assume the standard deviation is known to be 2.4.

This means, respectively, that:

$n = 250, X = 39.9, \sigma = 2.4$

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{39.9 - 40.3}{\frac{2.4}{\sqrt{250}}}$

$t = -2.64$

The value of the test statistic is -2.64.

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3 years ago

there are 13 animals in the barn. some are chickens and some are goats. there are 48 legs in all. how many of each animal are th

romanna [79]

Answer:

Step-by-step explanation:

chickens + goats = 13

so...

c + g = 13, so...

g = (13 - c)

2 legs times the number of chickens (2c) + 4 legs times the number of goats (4g) = 48 total legs. So...

2c + 4(13-c) = 48, so

2c + 52 - 4c = 48, so

-2c = -4, so

2c = 4, so

c = 2.

There are 2 chickens, and therefore 11 goats.

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3 years ago

The system of equations y=-2x+3 and y= x is graphed.What is the solution to the system of equations?

Evgen [1.6K]

Answer:

(1,1) x=1 y=1

Step-by-step explanation:

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2 years ago