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snow_lady [41]
3 years ago
6

there are 300 window for b buildings. assuming there is an equal number of windows per building, how many windows does each buil

ding have
Mathematics
1 answer:
shepuryov [24]3 years ago
3 0

Answer:

x = \frac{300}{b}

Step-by-step explanation:

We are given that, "b" number of buildings has 300 windows.

Let b represent the number of buildings.

Let x represent the number of windows per building.

Thus, the following equation can be used to expressed the number of windows for b buildings:

Number of buildings*number of windows per building = 300 windows

x*b = 300

The number of windows each building has would be:

\frac{x*b}{b} = \frac{300}{b}

x = \frac{300}{b} windows per building

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How to do improper fractions with 3.8 repeating
vivado [14]
3.88888=3.88888/1=38.8888888

so lets ssay our repeating decimal = a fraction x
x=3.888 is true
multiply by 10
10x=38.8888
now subtract fir frist eqation from second
10x-x=38.8888-3.888888
9x=35
divide both sides by 9
x=35/9
x=3 and 7/9

anser is 3.88=3 and 7/9

3 0
3 years ago
You are working at a Silver Mountain Tea bottling plant! The bottles of iced tea are supposed to be filled with 12 ounces of liq
Ede4ka [16]

Answer: (12.007\ , \ 12.033)

Step-by-step explanation:

Given : Sample size : n= 36 , which is a large sample (n>30) so the test applied here is z-test.

Significance level : \alpha: 1-0.95=0.05

Using Standard normal table , Critical value : z_{\alpha/2}=1.96

Sample mean : \overline{x}=12.02

Standard deviation: \sigma= 0.04

The confidence interval for population means is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

i.e.12.02\pm(1.96)\dfrac{0.04}{\sqrt{36}}

\approx12.02\pm0.013=(12.02-0.013,\ 12.02+0.013)\\\\=(12.007\ , \ 12.033)

Hence, the 95 percent confidence interval for the fill rate = (12.007\ , \ 12.033)

4 0
4 years ago
A company president randomly selects 5 employees to complete a survey. There are 50 employees in the company. In how many differ
Gre4nikov [31]

Answer:

254,251,200

Step-by-step explanation:

This is a combination question, since the order doesn't matter, the formula for combinations is n!/(n-r)! n is the amount of things we can choose from but r is the amount of things (employees in this case) we actually select. n = 50 and r = 5. This we get 50!/(50-5)! or 50!/45!, using a calculator, we can find that 50!/45! is equal to 254,251,200. That is our final answer for the amount of combinations available.

8 0
3 years ago
Andrea and Ashley are middle distance runner's for the schools traffic and FaceTime in the 500 m race are approximately normally
swat32

Answer:

0.006 is the probability that the record will be broken in next year.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 62 seconds

Standard Deviation, σ = 0.8 seconds

We are given that the distribution of face time is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

The record will be broken if the time is less than 60 seconds.

P(time is less than 60 seconds)

P(x < 60)

P( x < 60) = P( z < \displaystyle\frac{60 - 62}{0.8}) = P(z < -2.5)

Calculation the value from standard normal z table, we have,  

P(x < 60) =0.006 = 0.6\%

Thus, 0.006 is the probability that the record will be broken in next year.

6 0
3 years ago
Please help, i’ll give brainliest!
Rama09 [41]

Answer: There is no correlation.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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