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rjkz [21]
3 years ago
9

PLEASE HELP ME!!! PLEASE TRY TO DO ALL OF THEM THX! :)

Mathematics
1 answer:
kakasveta [241]3 years ago
5 0
Hello there!

Number 1 is C (11, 4) Image is below

I don't know number 2, so so sorry!


Number 3 is A. 36 The formula for perimeter of a rectangle is (2 * base) + (2 * height)
The base = 13
The height = 5

(5 * 2) + (13 * 2)

10 + 26 = 36


Number 4 is 23 units. 


I hope I was of assistance!

~ Fire




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Answer:

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Step-by-step explanation:

first find the volume of the tank

V = 30 \times 30 \times 80

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to convert this to m^3 we know that 1m = 100cm

V = 72000 cm^3 \times \left(\dfrac{1\,\text{m}}{100\,\text{cm}}\right)^3

V = 72000 cm^3 \times \left(\dfrac{1\,\text{m}^3}{100^3\,\text{cm}^3}\right)

the cm^3 cancel out.

V = \dfrac{72000}{100^3} m^3

V = 0.072\,m^3

by simply converting the side-lengths to meters beforehand can give you this answer directly:

V = 0.3 \times 0.3 \times 0.8 = 0.072 m^3

it is given that 1 meter cube of water weighs about 2200 pounds.

1\,m^3 = 2200 \,\text{lb}

multiply both sides with 0.072 to find our answer:

1\,m^3 \times 0.072 = 2200 \times 0.072 \,\text{lb}

0.072\,m^3 = 158.4 \,\text{lb}

hence the weight of the water in the tank would be 158.4 pounds!

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Step-by-step explanation:

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As per given statement in the Question:

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