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2 years ago

A farmer bought a tractor for Rs 400000 and sold it

Mathematics

1 answer:

allochka39001 [22]2 years ago

3 0

Step-by-step explanation:

A farmer bought a tractor for Rs400000 and sold it after using some time at 10% depreciation rate for per year what is the cost.....

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David received $50 dollars for working at his father’s store. He spent $20 dollars at the movies, and $10 dollars buying comic b

statuscvo [17]

Total amount of money received by David for working at his father's store = $50
Amount of money spent by David at the movies = $20
Amount of money spent by David buying comics books = $10
Amount of money spent by David buying candy = $5
Then
Total amount spent by David = (20 + 10 + 5) dollars
       = 35 dollars
Amount of money saved by David = (50 - 35 ) dollars
   = 15 dollars
So
The ratio of the amount of money David
spent to the amount of money David saved = 35:15
      = 7:3
So the ratio of the amount of money David spent to the amount of money David saved is 7:3

5 0

3 years ago

In ΔVWX, m ∠ V = ( 5 x + 7 ) ∘ m∠V=(5x+7) ∘ , m ∠ W = ( 4 x + 16 ) ∘ m∠W=(4x+16) ∘ , and m ∠ X = ( 5 x + 17 ) ∘ m∠X=(5x+17) ∘ .

Otrada [13]

Answer:

idkyuhhggrtwuoiwe

Step-by-step explanation:

IFNDKS

6 0

2 years ago

What is the formula for a confidence interval?

ikadub [295]

Answer:

a) The formula is given by mean $\pm$ the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.

b) $\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

If the distribution for X is normal or if the sample size is large enough we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

Part a

The formula is given by mean $\pm$ the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.

Part b

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

5 0

3 years ago

The internal dimension of a cylindrical container has a base area of 20 cm^2 and a height of 10 cm. What is the internal volume

yawa3891 [41]

Answer:

C) 200 cm^3

Step-by-step explanation:

we observe that

Area=20 cm² and Height=10 cm

The formula to find volume is :

Volume= Area×Height

putting the values of area and height in above formula,we get

Volume= 20 cm²×10 cm

Volume= 200 cm³

The internal volume of the container is 200 cm³.

hope this helps

5 0

2 years ago

Y=2000e^{0.079x} y=2000e 0.079x

Kaylis [27]

Answer:

i dont get whats the question

Step-by-step explanation:

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2 years ago