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2 years ago

# no spams ans should be well explained

Mathematics

1 answer:

Bingel [31]2 years ago

4 0

Answer:

231 m²
₹ 4620

Step-by-step explanation:

See the attached.

The path goes along the perimeter of the park and parallel to the sides, something like the picture attached.

The path is 1 m wide and the total length is:

50*3 + 30*3 = 240 m

We need to consider the dark cells points in the picture with reflects the overlaps. They are counted twice and each is 1 m x 1 m.

Subtracting the duplicated area 9 x 1 m² to get the total area of the path:

240 - 9 = 231 m²

The cost of cementing is:

231*20 = 4620

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A bottling company uses a filling machine to fill plastic bottles with a popular cola. The bottles are supposed to contain 300 m

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Answer:

0.16

Step-by-step explanation:

For a normal distribution, the 68-95-99.7 rule says that 68% of the distribution lies within 1 standard deviation from the mean, 95% within two standard deviations and 99.7% within three standard deviations.

From the question,

Mean μ = 298 ml

Standard deviation σ = 3 ml

A value of 295 ml is within one standard deviation = 68%.

Since it's on the lower side, it's within 68% ÷ 2 = 34%.

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2 years ago

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2 years ago

Read 2 more answers

n 2018, homes in East Baton Rouge (EBR) Parish sold for an average of $239,000. You take a random sample of homes in Ascension p

Olenka [21]

Answer:

Conclusion

There is no sufficient evidence to conclude that the mean of the home prices from Ascension parish is higher than the EBR mean

Step-by-step explanation:

From the question we are told that

The population mean for EBR is $\mu_ 1 = \$239,000$

The sample mean for Ascension parish is $\= x_2 = \$246,000$

The p-value is $p-value = 0.045$

The level of significance is $\alpha = 0.01$

The null hypothesis is $H_o : \mu_2 = \mu_1$

The alternative hypothesis is $H_a : \mu_2 > \mu_1$

Here $\mu_2$ is the population mean for Ascension parish

From the data given values we see that

$p-value > \alpha$

So we fail to reject the null hypothesis

So we conclude that there is no sufficient evidence to conclude that the mean of the home prices from Ascension parish is higher than the EBR mean

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2 years ago

A triangle has the following side lengths: x - 2, x, and 3x + 1. Another triangle has the following side lengths: 2x - 5, x + 4,

notka56 [123]

we know that

Perimeter of a triangle is equal to

P=a+b+c

where

a,b and c are the length sides of the triangle

Find the perimeter of the triangles

Triangle N 1

P=(x-2)+(x)+(3x+1)-------> P=5x-1

Triangle N 2

P=(2x-5)+(x+4)+(6x-7)------> P=9x-8

equate the perimeters

5x-1=9x-8--------> 9x-5x=-1+8-------> 4x=7

x=7/4------> x=1.75

therefore

the answer is

x=1.75

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3 years ago

# no spams ans should be well explained ​

# no spams ans should be well explained