Apiece of carpet is 8 feet wide and 12 feet long. the carpet needs to be reduced by a scale factor so that the reduced carpet is 2 feet wide. what is the area of the reduced carpet?

Step-by-step explanation:

We have been given that a piece of carpet is 8 feet wide and 12 feet long. The carpet needs to be reduced by a scale factor so that the reduced carpet is 2 feet wide.

First of all, let us find the scale factor by which the width of carpet has been reduced.

Dividing both sides by 8 ft we will get,

Let us find the length of carpet after reduced by a scale factor of .

Now we will multiply the reduced length and width of carpet to find the area of reduced carpet.

Therefore, the area of reduced carpet is 6 square feet.

Hello there!

initially, the carpet was 8ft wide and 12ft long.

The rescaled carpet has 2ft wide.

The scale factor then is: 8ft*k = 2ft

k = 2ft/8ft = 1/4

now that we know the scale factor, we can find the length of the long side in the rescaled carpet:

x = 12ft*(1/4) = 3ft

Then, the rescaled carpet is 2ft wide and 3ft long.

The area of the square is equal to the product between the wide length and the length of the long side; so:

A = 2ft*3ft = 6ft^2

b

step-by-step explanation:

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;