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kenny6666 [7]
3 years ago
8

Are positive integers closed under subtraction?

Mathematics
2 answers:
Galina-37 [17]3 years ago
8 0
Do you remember the answer..? I need help as well.
Flura [38]3 years ago
6 0
#1 not closed
#2 closed
#3 not closed
#4 not closed
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A three-dimensional model of lucia’s apartment is shown. to cool the whole apartment, an air conditioner must provide 2.5 btus p
SashulF [63]

The number of btus which are needed to cool Lucia’s apartment shown in the three-dimensional model are 20,400 btus.

<h3>What is of volume of rectangular prism?</h3>

Volume of rectangular prism is the amount of quantity, which is obtained in it in the 3 dimensional space.

Volume of a rectangular prism is the product of its width, height and length.

V=w\times h\times l

Here, (w) is the width of the base (l) is the length and (h) is the height of the rectangular prism.

A three-dimensional model of Lucia’s apartment is shown. The image is attached below for the apartment. The three section are there in the apartment. The volume of this apartment is,

V=[(20\times12)+(20-9)\times16+(20\times20)]\times10\\V=8160\rm\; ft^3

To cool the whole apartment, an air conditioner must provide 2.5 btus per cubic foot. To cool, the 8160 cubic foot apartment the btus needed are,

n=8160\times2.5\\n=20400\rm\; btus

Hence, the number of btus which are needed to cool Lucia’s apartment shown in the three-dimensional model are 20,400 btus.



Learn more about the volume of a rectangular prism here;

brainly.com/question/4016105

5 0
2 years ago
What is next letter? Y B W DUF
4vir4ik [10]
Find the pattern
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The pattern is the same as the end of the alphabet

Therefore, the next letter would be S as we have to skip one from U, this being T.
5 0
3 years ago
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MArishka [77]

Answer:

43 - 15x

is the answer

4 0
3 years ago
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AysviL [449]
1.) Multiply the parentheses by -5x
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4 0
3 years ago
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? <br><br> a<br> b<br> 0<br> -10<br> 1<br> -7<br> 2<br> -4
wlad13 [49]

Answer:

-7

Step-by-step explanation:

3 0
3 years ago
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