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morpeh [17]
2 years ago
15

Yesterday the temperature at noon was 11.4°F by midnight the temperature had decreased by 15.7° what was the temperature at midn

ight
Mathematics
2 answers:
julsineya [31]2 years ago
5 0
So you know the temperature you started out with: 11.4°F.

And you know that it decreases 15.7° (Fahrenheit I'm assuming). So all you need to do is subtract 15.7°F from 11.4°F.

11.4 - 15.7 = ?
lina2011 [118]2 years ago
3 0
11.4 - 15.7 = -4.3. The temperature at midnight is -4.3<span>°F.

Hope this helps! Have a great day :)</span>
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Julli [10]

Answer:

3 7 8 2 6 4 1 10 3 5 9 the answer

6 0
3 years ago
If a fire is burning a building and it takes 2 hours to put it out using 2000 gal./min., what minimum diameter cylindrical tank
strojnjashka [21]

Answer:

The minimum diameter of the cylindrical tank needed to store the quantity needed to put out the fire is approximately 58.415 feet.

Step-by-step explanation:

A gallon equals 0.134 cubic feet. First, we determine the amount of water (Q), measured in cubic feet, needed to put out the fire under the assumption that water is consumed at constant rate:

Q = \dot Q \cdot \Delta t (1)

Where:

\dot Q - Volume rate, measured in feet per minute.

\Delta t - Time, measured in minutes.

If we know that \dot Q = 2000\,\frac{gal}{min} and \Delta t = 120\,min, then the amount of water is:

Q = \left(2000\,\frac{gal}{min} \right)\cdot (120\,min) \cdot \left(0.134\,\frac{ft^{3}}{gal} \right)

Q = 32160\,ft^{3}

And the diameter of the cylindrical tank based on the capacity found above is determined by volume formula for a cylinder:

Q = \frac{\pi}{4}\cdot D^{2}\cdot h (2)

Where:

D - Diameter, measured in feet.

h - Height, measured in feet.

If we know that Q = 32160\,ft^{3} and h = 12\,ft, then the minimum diameter is:

D^{2} = \frac{4\cdot Q}{\pi\cdot h}

D = 2\cdot \sqrt{\frac{Q}{\pi\cdot h} }

D = 2\cdot \sqrt{\frac{32160\,ft^{3}}{\pi\cdot (12\,ft)} }

D \approx 58.415\,ft

The minimum diameter of the cylindrical tank needed to store the quantity needed to put out the fire is approximately 58.415 feet.

8 0
2 years ago
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Natasha_Volkova [10]

Answer:

It’s A

Step-by-step explanation:

Cuz it’s just the numbers are replaced in different places but when u multiply u get the same ans ig

6 0
2 years ago
How much does an ice cream cost with 11 ounces of toppings? If they charge $3.00 for an ice cream, plus 50 cents per ounce of to
arlik [135]

Answer:

$8.50

Step-by-step explanation:

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5 0
2 years ago
Read 2 more answers
HELP PLZ PLZ ITS DUE IN 30 MINUTES
Bad White [126]

Answer:

wouldn't that be...24x²?

3 0
2 years ago
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