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sp2606 [1]
3 years ago
9

HELP WILL MARK BRAINLIEST Paul wants to paint all four of his basement walls . Each gallon covers 400 sq feet . The dimensions o

f the basement are 25’ by 30’. The walls are 8’ high how many gallons of paint will Paul need to complete the job if he’s only paining one coat ?
Mathematics
1 answer:
solmaris [256]3 years ago
8 0

Answer:

Pual needs 3 gallons

Step-by-step explanation:

∵ The dimensions of the four walls are:

   25 × 8 , 30 × 8 , 25 × 8 , 30 × 8

∴ The area of painting = 2(25 × 8) + 2(30 × 8)

                                     = 400 + 480 = 880 square feet

∵ each gallon paint 400 square feet

∴ The number of gallons = 880/400 = 2.2, so he needs 3 gallons

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Answer:

y-2 = -(x-2)

Step-by-step explanation:

To find the slope

m = (y2-y1)/(x2-x1)  where (x1,y1) and (x2,y2) are two points on the line

    = (1-3)/(4-2)

   =-2/2

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The point slope form is

y-y1 = m(x-x1)  wher m is the slope and (x1,y1) is a point on the line

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3 years ago
Make g the subject of the formula in w = 7 - sqrt g​
sukhopar [10]

Answer: g = w² - 14w + 49

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Step-by-step explanation:

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3 years ago
3. Leanne has a container divided into
Maurinko [17]

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22 containers but I didn't use a calculator!

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3 years ago
Find the mean and standard deviation for the set of data.
dem82 [27]

The mean and standard deviation for the set of data will be 16 and 5.87. Then the correct option is A.

<h3>What is a standard deviation?</h3>

It is the measure of the dispersion of statistical data. Dispersion is the extent to which the value is in a variation.

The set of data is given below.

16, 22, 8, 5, 20, 18, 14, 17, 24

The mean of the data set will be

μ = (16 + 22 + 8 + 5 + 20 + 18 + 14 + 17 + 24) / 9

μ = 144 / 9

μ = 16

Then the standard deviation of the data set will be

\rm \sigma = \sqrt{\dfrac{\Sigma (x_i - \mu)^2}{n}} \\\sigma = \sqrt{\dfrac{(16 - 16)^2 +(22 - 16)^2 + (8-16)^2 + ......+(24-16)^2  }{9}} \\\sigma = \sqrt{\dfrac{310}{9}}\\

Simplify the expression further, then we have

σ = √34.44

σ = 5.87

The mean and standard deviation for the set of data will be 16 and 5.87.

Then the correct option is A.

More about the standard deviation link is given below.

brainly.com/question/12402189

#SPJ1

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1 year ago
Y = 2x + 7<br> a) Work out the value of y when x=4<br> b) Work out the value of y when x=-3
creativ13 [48]
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b ) y = 2(-3) + 7
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