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babymother [125]
3 years ago
9

A swimming pool is 8 meters long 6 meters wide and 2 meters deep the water resistant paint need for the pool cost $6 per square

meter how much will it cost to paint the pool
a. how many faces of the pool do you have to paint ?

b.how much paint ( in square meters) do you need to paint the pool ?

c. how much will it cost to paint the pool ?
Mathematics
1 answer:
Sati [7]3 years ago
3 0

Answer:

Step-by-step explanation:

You might be interested in
Simplify the expression 56-2(4+x)
lesya692 [45]

Answer:

48+x

Step-by-step explanation:

56-2(4+x)

56-8+x

48+x

5 0
3 years ago
Assume that population mean is to be estimated from the sample described. Use the sample results to approximate the margin of er
Vikentia [17]

Answer:

ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1

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".

\bar X =69 represent the sample mean for the sample  

\mu population mean

s=4.0 represent the sample standard deviation

n=64 represent the sample size  

Assuming the X follows a normal distribution

X \sim N(\mu, \sigma)

The sample mean \bar X have the following distribution:

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

The margin of error for the sample mean is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}

Since we have the sample standard deviation we can estimate the margin of error like this:

ME=t_{\alpha/2}\frac{s}{\sqrt{n}}

The next step would be find the value of \z_{\alpha/2}, \alpha=1-0.95=0.05 and \alpha/2=0.025

We can find the degrees of freedom like this:

df=n-1=64-1=63

And we can find the critical value with the following code in excel for example: "=T.INV(0.025,63)" and we got:

t_{\alpha/2}=\pm 1.998

And the margin of error would be :

ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1

3 0
3 years ago
1--1/3(-3) + 4(1)+12=3(-3)
igor_vitrenko [27]

Answer:

No. The answer on the right is positive 16 while the answer on the left is negative 9. 16≠-9

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I nee help. Can anyone help please.
Radda [10]
You have to take 60 degrees and add it to 90 degrees because that’s how much the box in the corner is worth


Then add those 2 together which is 150 after that’s subtract it by 270 which is 120


Answer: 120 degrees or 120
7 0
3 years ago
Can someone please help ASAP
White raven [17]

Answer: 36

Step-by-step explanation:

Multiply -6 by itself six times, then divide 1 by -6 four times. Multiply the products. Then multiply -6 by itself one more time and you will get 36.

The top question is 1/4. There seems to be a small multiplaction symbol next to the fractions, I'm ignoring that. To get 1/4, I multiplied 2 by itself six times because of the exponent, to get 64. I did the same with the bottom, and recieved 256. 64/256 is 1/4.

6 0
3 years ago
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