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Juliette [100K]
3 years ago
12

Students picked

Mathematics
1 answer:
Ainat [17]3 years ago
8 0
144 divided by 16, 9 pounds

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If the cost of plastering 4 walls of a room at Rs 45 per sq. m is Rs 8100, find the area of the 4 walls of the room​
olga55 [171]

Step-by-step explanation:

Rs8,100 / (Rs45 per square meter)

= 180 square meters.

The area of the 4 walls of the room is 180 sq.m.

3 0
3 years ago
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
in the number line shown below,which lettered point represents the quotient of 1 7/8 of divided by 1/2
emmasim [6.3K]
Where is the number line I can't solve without it
5 0
3 years ago
Read 2 more answers
The train travels 580 miles in 4 hours. The train travels at a constant rate. At this rate, how many hours will it take the trai
Mandarinka [93]

We set up the equation 580/4 = 725/x. Since we know these are proportional, we can cross-multiply and solve to get x = 5.

8 0
3 years ago
A boat travels 320 miles in 11 hours (with a constant speed), How much
Arada [10]

Answer: 4.2625

Step-by-step explanation:

11/320=x/124

11*124=320x

1364=320x

x=4.2625

Hopefully I was helpful!

3 0
3 years ago
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