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RideAnS [48]
3 years ago
10

Chemical reactions occur around us every day. Combustion releases the carbon stored in fossil fuels (eg. coal, ol, natural gases

) into the atmosphere as carbon dioxide gas
Which of the following equations represent this process?
A)OCH 1902-C02-H20
B) CO2H20 - C:20+02
C)Caco, HNO 3 - Calo) 2.H 20-02
D) NaHCO 3 - HC ZH30 2-NaC 302H20-CO2
Mathematics
2 answers:
Nikitich [7]3 years ago
8 0

Answer:

D

Step-by-step explanation:

Cause I know

iragen [17]3 years ago
4 0

Answer: D

Step-by-step explanation:

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A farmer has a water tank for cows in the shape of a cylinder with a radius of 7 ft and a height of 3 ft. The tank comes equippe
natima [27]

Answer:

volume of the tank be when the sensor turns on = 92.316 ft³

Step-by-step explanation:

Volume of a cylinder = πr²h

Pi = π = 3.14

Radius = r = 7 ft

Height = h = 3 ft

Volume of a cylinder = πr²h

= 3.14 × 7² × 3

= 3.14 × 49 × 3

= 461.58 ft³

The tank comes equipped with a sensor to alert the farmer to fill it up when the water falls to 20% capacity.

volume of the tank be when the sensor turns on = 20% of Volume of a cylinder

= 0.20 * 461.58 ft³

= 92.316 ft³

volume of the tank be when the sensor turns on = 92.316 ft³

5 0
3 years ago
1) A factory used 97 kilograms of tomatoes to make 5 batches of pasta sauce. What
Artemon [7]

Answer:

19.4 or 97/5

Step-by-step explanation:

97 kilos / 5 batches = 19.4 kilos of tomatoes in each batch

8 0
3 years ago
A company is having business cards printed. The cost to design the business card is $20. There is an additional cost of $0.05 pe
alekssr [168]

Answer:

It would be D,

Step-by-step explanation:

D. Use your equation to determine the total cost of 600 business cards.

3 0
3 years ago
Factorise<br> X2 + 3√3x + 6. Please help me with this it’s urgent
ser-zykov [4K]

Answer:

(x+2\sqrt{3} )(x+\sqrt{3} )

Step-by-step explanation:

x^2 + 3\sqrt{3}x + 6\\=> x^2 + \sqrt{3}x + 2\sqrt{3}x +6\\=> x( x+\sqrt{3}) + 2\sqrt{3}(x+\sqrt{3} )\\  => (x+2\sqrt{3} )(x+\sqrt{3} )

6 0
3 years ago
Factor this expression:<br><br> mn - 4m - 5n + 20
andrey2020 [161]

Answer:

(m-5) (n-4)

Step-by-step explanation:

mn - 4m - 5n + 20

We will factor by grouping

mn -5n  -4m +20

Factor an n out of the first 2 terms and a -4 out of the last 2 terms

n (m-5) -4(m-5)

Now factor out a m-5

(m-5) (n-4)

6 0
3 years ago
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