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3 years ago

A carpenter needs to cut a 3.9 meter long piece of wood into 3 equal lengths. How long should each piece be in millimeters?

Mathematics

2 answers:

statuscvo [17]3 years ago

8 0

Answer:

1300

Step-by-step explanation:

evablogger [386]3 years ago

5 0

Answer:

1300

Step-by-step explanation:

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Assess the extent to which bad road use has a direct impact on the physical,emotional,social,and economic aspects to the family

Dahasolnce [82]

It is true that bad road condition does have a direct impact on the physical, emotional and economic aspects to the family, the community and the country. Bad roads can cause accidents which directly impacts a person physically. Mentally it is very stressful for a person to drive on bad roads. He or she has to be extra careful regarding potholes and other damages that have happened to the road. Economically bad roads can be the reason for price rise of products as time required to move a product via road is more. Also the cost of transport increases drastically.

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3 years ago

Read 2 more answers

450 high school freshmen were randomly selected for a national survey. Among survey participants, the mean grade-point average (

umka21 [38]

Answer:

The margin of error is of 0.01.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.7}{2} = 0.15$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.15 = 0.85$ , so Z = 1.037.

The margin of error is of:

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Standard deviation was 0.21.

This means that $\sigma = 0.21$

Sample of 450:

This means that $n = 450$

What is the margin of error, assuming a 70% confidence level, to the nearest hundredth?

$M = z\frac{\sigma}{\sqrt{n}}$

$M = 1.037\frac{0.21}{\sqrt{450}}$

$M = 0.01$

The margin of error is of 0.01.

4 0

3 years ago

What is the simple interest rate <br>

postnew [5]

Answer:

Uhh maybe 20284646392

Step-by-step explanation:

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3 years ago

HURRY i’ll give brainliest please help!

Tema [17]

I think it is Good deeds

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3 years ago

Differentiating a Logarithmic Function in Exercise, find the derivative of the function. See Examples 1, 2, 3, and 4.

adoni [48]

Answer: The required derivative is $\dfrac{8x^2+18x+9}{x(2x+3)^2}$

Step-by-step explanation:

Since we have given that

$y=\ln[x(2x+3)^2]$

Differentiating log function w.r.t. x, we get that

$\dfrac{dy}{dx}=\dfrac{1}{[x(2x+3)^2]}\times [x'(2x+3)^2+(2x+3)^2'x]\\\\\dfrac{dy}{dx}=\dfrac{1}{[x(2x+3)^2]}\times [(2x+3)^2+2x(2x+3)]\\\\\dfrac{dy}{dx}=\dfrac{4x^2+9+12x+4x^2+6x}{x(2x+3)^2}\\\\\dfrac{dy}{dx}=\dfrac{8x^2+18x+9}{x(2x+3)^2}$

Hence, the required derivative is $\dfrac{8x^2+18x+9}{x(2x+3)^2}$

3 0

3 years ago