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Mariulka [41]
2 years ago
5

Why must fire extinguishers be routinely maintained?

Mathematics
2 answers:
STALIN [3.7K]2 years ago
8 0

Answer:

To make sure they remain effective.

Step-by-step explanation:

A fire extinguisher is a portable device used to extinguish a fire.

Handheld extinguishers are pressurised with nitrogen or carbon dioxide and can be used in the kitchen or garage.

Fire extinguishers controls the amount of pollution caused by smoke and burning.

Although they have no expiring date, they won't last forever. Extinguishers should work for 5 to 15 years, but fire extinguishers be routinely maintained to make sure they remain effective.

eduard2 years ago
7 0

Answer: the answer would be To make sure they remain effective.

Step-by-step explanation:

It wouldn't be to make sure they are up to code because fire extinguishers do not use code, code is used in electronics. For the second option and the last option it would not be this because they could be trained in a practice instead of using the real thing.

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On a map, 1 inch equals 5.2 miles. Two house are 3.5 inches apart on the map. What is the actual distance between the house?
MissTica

Answer:

18.2 miles

Step-by-step explanation:

simple multiplication:

We know that 1 inch of distance on the map is equal to 5.2 miles.

Using this knowledge we can multiply the amount of inches by the miles per inch.

5.2*3.5=18.2 miles apart

Hope this helps!!

4 0
3 years ago
A rocket is launched from the top of a 99-foot cliff with an initial velocity of 122 ft/s.
Harman [31]
Remember that c is the initial height. Since we the rocket is in a 99-foot cliff, c=99. Also, we know that the velocity of the rocket is 122 ft/s; therefore v=122
Lets replace the values into the the vertical motion formula to get:
0=-16 t^{2} +122t+99
Notice that the rocket hits the ground at the bottom of the cliff, which means that the final height is 99-foot bellow its original position; therefore, our final height will be h=-99
Lets replace this into our equation to get:
-99=-16 t^{2} +122t+99
-16 t^{2} +122+198=0

Now we can apply the quadratic formula t= \frac{-b+or- \sqrt{ b^{2} -4ac} }{2a} where a=-16, b=122, and c=198
t= \frac{-122+or- \sqrt{ 122^{2}-(4)(-16)(198) } }{(2)(-16)}
t= \frac{-122+ \sqrt{27556} }{-32} or t= \frac{-122- \sqrt{27556} }{-32}
t= \frac{-122+166}{-32} or t= \frac{-122-166}{-32}
t= \frac{-11}{8} or t=9

Since the time can't be negative, we can conclude that the rocket hits the ground after 9 seconds.
5 0
3 years ago
Read 2 more answers
7 students have 5 blocks each.<br><br> Which helps you find the total number of blocks?
ankoles [38]

Answer:

5 blocks

Step-by-step explanation:

5 blocks for every barometer

5 0
1 year ago
Which situation can be represented by Y= 12x - 4?​
andrey2020 [161]

Answer:

D. The number of eggs , y, in x, dozen eggs for sale after 4 dozen eggs are sold

Step-by-step explanation:

The correct answer is D

The number of eggs , y, in x, dozen eggs for sale after 4 dozen eggs are sold.

Hope this helps.

4 0
2 years ago
Read 2 more answers
Reflect the shape A in the line
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5 0
2 years ago
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