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3 years ago

it takes 48 minutes for 10 people to paint 8 walls.how many minutes does it take 6 people to paint 9 walls?

Mathematics

1 answer:

aleksklad [387]3 years ago

3 0

I think the answer is 28.8 minutes

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−8x+6−2=−12<br> what is x?

zubka84 [21]

Answer: x=2

Step-by-step explanation:

have a good day! :)

plz give me brainliest

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3 years ago

Read 2 more answers

Answer please and explain

raketka [301]

The rise is 2 and the run is 3

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3 years ago

In a company's first year in operation, it made an annual profit of $405,500. The profit of the company increased at a constant

Drupady [299]

Answer:

405500 x 1.24^18 =$19479651.89

$19479651.89 - $405500=$19074151. 89

$19074152

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2 years ago

Identify the parts of the expression. Then write a word expression for the numerical or algebraic expression.

mixas84 [53]

2 = coefficient
e = variable
- = operation
f = variable

2e = 2 × e

f subtracted from the product of two and e

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3 years ago

The Wall Street Journal reported that automobile crashes cost the United States $162 billion annually (2008 data). The average c

ivanzaharov [21]

Answer:

$n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94$

So the answer for this case would be n=94 rounded up to the nearest integer

Step-by-step explanation:

Information given

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma= 500$ represent the population standard deviation

n represent the sample size

Solution to the problem

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{s}{\sqrt{n}}$ (a)

And on this case we have that ME =120 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The confidence2 level is 98% or 0.98 then the significance level would be $\alpha=1-0.98=0.02$ and $\alpha/2=0.01$ , the critical value for this case would be $z_{\alpha/2}=2.326$ , replacing into formula (b) we got:

$n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94$

So the answer for this case would be n=94 rounded up to the nearest integer

8 0

3 years ago