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zubka84 [21]
3 years ago
10

Molly's Milk Company wants to repaint the barrels in which the milk is stored. The workers need to know how much area they will

be painting so that they can order the correct amount of paint. If a milk barrel is 7 feet tall with a radius of 6 feet, what is the surface area of one barrel?
Mathematics
1 answer:
bagirrra123 [75]3 years ago
6 0

The entire formula for the surface area of a cylinder is 2 π r2 + 2 π r h

2 * 3.14 * 6^2 + 2 * 3.14 * 6 * 7 which equals 489.84 as ur surface area


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I dentist the slope and a point on the line
Anika [276]

Answer:

2/3 (0,-3) is one possible answer.

Step-by-step explanation:

y  -1 = 2/3(x-6)  We want to get this into the slope intercept form of a line.  We want it to be in the form y = mx + b.  Let's clear the fraction first by multiplying the whole equation through by 3.

3(y - 1) = 3[2/3(x - 6)]

3y -3 = 2(x -6)

3y - 3 = 2x -12

3y = 2x - 9  Now divide all the way through by 3 to get

y = 2/3x - 3  

y = mx + b.  The m part is the slope.  In this equation the slope is 2/3

There are in infinite amount of points on a line.  I do not know if they give you a picture or if you are just to create your own.  I am going to create a point that have x = 0.  I get to pick the point.  I could pick any number.  0 is just usually really easy.  So, if I substitute 0 for x I will get:

y = 2/3(0) - 3

y = 1  so my point is (0,-3)

Now that I think about it, I do not think that I would start out clearing the fraction even though it works.  I think that I would do it like this"

y - 1 = 2/3(x - 6)  Distribute the 2/3 through (x - 4) to get

y-1 = 2/3x -4  I can make -6 a fraction by putting it over 1.  Now we have 2/3(-6/1)  multiply across to get  -12/3.  A positive times a negative is a negative.  -12 divided by 3 is -4.

y - 1 = 2/3x -4   now add 1 to both sides.

y = 2/3x -3

6 0
2 years ago
Help with #19 plzzz!!!???
Olegator [25]
Do "42 + 12" Since 7 x 6 is 42 and 4 x 3 is 12.
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4 years ago
ALGEBRA evaluate each eapression if x= -3, y=8, and z=-12<br> y-10 <br> 12-z<br> 3-x<br> z-24
Vinvika [58]

Answer:

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Step-by-step explanation:

Put the numbers in place of the corresponding letter and do the arithmetic.

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  12 -z = 12 -(-12) = 24

  3 -x = 3 -(-3) = 6

  z -24 = -12 -24 = -36

6 0
3 years ago
Evaluate 7C3. 35 210 21 105
nydimaria [60]

\bf _nC_r=\cfrac{n!}{r!(n-r)!}\qquad \qquad \qquad \qquad \qquad _7C_3=\cfrac{7!}{3!(7-3)!} \\\\\\ \textit{use the }[!]\textit{ factorial button or the }[_nC_r]\textit{ button in your calculator}

8 0
4 years ago
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stiv31 [10]

Answer:

  1 inch

Step-by-step explanation:

Factors of 63 are 7 and 9, each of which is 2 more than the dimensions of the photo. Sarah's frame is 1 inch wide.

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<em>Solution using an equation</em>

If you let w represent the width of the frame, the area of the framed photo is ...

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  4w^2 +24w -28 = 0 . . . . write in standard form

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  (w -1)(w +7) = 0 . . . . . . . . factor

The positive solution to this equation is w=1.

The width of the frame is 1 inch.

5 0
3 years ago
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