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mario62 [17]
2 years ago
8

Mr. Bates and Mr. Z want to refinish the community center gym floor. The rectangular floor is 15.2 m wide and 25.6 long. If each

gallon of polyurethane covers about 180 square meters, how many gallons should Mr. Bates and Mr. Z buy? *
Mathematics
1 answer:
Zinaida [17]2 years ago
3 0

Answer:

3 gallons

Step-by-step explanation:

area = 15.2 x 25.6 = 389.12 m²

389.12/180 = 2.16

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Is 0.2487 a interger
BabaBlast [244]

No.  0.2487 is not an interger.

There are two big reasons for this:

1).  There is no such thing as an ' interger ',
       so no number could be one.
       You probably mean ' integer '.

2).  An integer is a whole number ... a number
      with no fraction part and no decimal part.
      0.2847  is all decimal, and not even big enough
      to make the smallest whole number.  (That's ' 1 '.)
7 0
3 years ago
Please help i put a picture below
PSYCHO15rus [73]

Answer:

Step-by-step explanation:

This is not nearly as threatening and scary as I first thought it was.  You must be in the section in Geometry where you are taught that perimeter of similar figures exist in a one-to-one relationship while areas of similar figures exist in a squared-to-squared relationship.  We will use that here.  

The area formula for a regular polygon is

A=\frac{1}{2}ap where a is the apothem and p is the perimeter.  We are first asked for the area of the polygon, but it would make more sense to find the perimeter first, since we need it to find the area.

P = 5(8) so

P = 40

We are given that the area of the triangle inside that polygon is 22.022 units squared.  Knowing that the area formula for a triangle is

A=\frac{1}{2}bh we can sub in what we know and solve to find the height:

22.022=\frac{1}{2}(8)h and

22.022 = 4h so

h = 5.5055 units

It just so happens that the height of that triangle is also the apothem of the polygon, so now we have what we need to find the area of the polygon:

A=\frac{1}{2}(5.5055)(40)

which gives us an area of

A = 110.11 units squared.

Here is where we can use what we know about similar figures and the relationships between perimeters and areas.  We will set up a proportion with the smaller polygon info on top and the larger info on bottom.  We know that the larger is 3 times the smaller, so the ratio of smaller to larger is

\frac{s}{l}:\frac{1}{3}

Since perimeter is one-to-one and we know the perimeter of the smaller, we can create a proportion to solve for the perimeter of the larger:

\frac{s}{l}:\frac{1}{3}=\frac{40}{x}

Cross multiply to get that the perimeter is 120 units.  You could also have done this by knowing that if the larger is 3 times the size of the smaller, then the side measure of the larger is 24, and 24 * 5 = 120.  But we used the way we used because now we have a means to find the area of the larger since we know the area of the smaller.

Area exists in a squared-to-squared relationship of the perimeter which is one-to-one.  If the perimeter ratio is 1:3, then the area relationship is

\frac{s}{l}:\frac{1^2}{3^2} which is, simplified:

\frac{s}{l}:\frac{1}{9}

Since we know the area for the smaller, we can sub it into a proportion and cross multiply to solve for the area of the larger.

\frac{s}{l} :\frac{1}{9} =\frac{110.11}{x}

A of the larger is 990.99 units squared

5 0
3 years ago
HELP BRAINLIEST! I think its none of the above
mamaluj [8]

Answer:

180 degrees

Explanation:

So if it was 90 degrees it would be the same thing just fliped. 180 means that it did a half a rotaion so it would be the mirrored of the original object. That is what we see the second figure is mirrored of the other. 90 degrees also would be different.

<h2><u>Answer: 180 degrees</u></h2>

7 0
2 years ago
Read 2 more answers
I need help asap what is an equation (using whole numbers) that is equal to 2/3
EleoNora [17]

Answer:

4÷6

8÷12

16÷24

Step-by-step explanation:

Any of these will work. Hope this helps!

4 0
2 years ago
Find the value of x:<br> (6x + 7) °<br> 65°<br> (y + 90°
Salsk061 [2.6K]

Step-by-step explanation:

65 + (y + 9) = 180 ---------- Sum of angles on a

straight line

y + 65 + 9 = 180

y + 74 = 180

y = 180 - 74 = 106

6x + 7 = y + 9 ----------- Alternate angles

But y = 106,

6x + 7 = 106 + 9

6x = 115 - 7

x = 108/6 = 18

7 0
2 years ago
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