2 years ago

Help me plz with this 50 points if right

Mathematics

2 answers:

Monica [59]2 years ago

8 0

Answer:

18 units.

Step-by-step explanation:

If you plot the points on a graph then you can clearly see where point D goes, (-2, 3). Then, you can find the side length, which is 4.5 units. Multiply that by 4 and you get 18 units.

rodikova [14]2 years ago

5 0

Answer:

The perimeter is 18 units

Step-by-step explanation:

Each side is 4.5 units

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One liter of paint covers 100 square feet. How many gallons of paint does it take to cover a room whose walls have an area of 80

mezya [45]

1 gallon is 3.78 L
100 sq feet needs 1 L
800 sq feet needs x

100/800 = 1/x
100x = 800
x = 800/100
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If you use the fact that 4 L = 1 gallon then you need 2 gallons of paint. I you use the more accurate 3.78 L then
1 gallon = 3.78 L
x gallon = 8 L

3.78 x = 8*1
x = 8/3.78
x = 2.12 gallons.

I guess you could say that 1 gallon and 1 L would do you.

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