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Readme [11.4K]
3 years ago
13

Many smoke detectors contain:

Mathematics
1 answer:
Yanka [14]3 years ago
3 0

Answer:

Option B, Americium-241, is the right answer.

Step-by-step explanation:

  • A device which senses smoke usually as an indicator of fire is known as a smoke detector.
  • The two most common types of smoke detectors are the Ionization chamber and photoelectric smoke indicators.
  • Many of these smoke detectors comprise some amount of americium-241, which is a radioactive substance.
  • These smoke detectors respond immediately to fires that give off some smoke.
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A. The number of dogs is 4/5 the number of cats.
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Step-by-step explfdsanation:

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3 years ago
The gravitational potential energy of an object is
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Answer:

h=p/(mg)

Step-by-step explanation:

P=mgh

solving for h,

h=p/(mg)

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3 years ago
A recipe for sparkling grape juice calls for 1.5 quarts of sparkling water and .75 quart of grape juice. A. How much sparkling w
cluponka [151]

Answer: We need to mix 18 quarts of sparkling water with 9 quarts of grape juice.

We need to mix 1.875 quarts of grape juice with 3.75 quarts of sparkling water.

Step-by-step explanation:

Given: A recipe for sparkling grape juice calls for 1.5 quarts of sparkling water and .75 quart of grape juice.

Since, for recipe of sparkling grape juice , they should be used in same proportion.

Let x be the amount of sparkling water need to mix with 9 quarts of grape juice, then

\frac{x}{9}=\frac{1.5}{0.75}\\\Rightarrow\ x=\frac{1.5\times9}{0.75}\\\Rightarrow\ x=18

We need to mix 18 quarts of sparkling water with 9 quarts of grape juice.

Let y be the amount of grape juice need to mix with 3.75 quarts of sparkling water, then

\frac{3.75}{y}=\frac{1.5}{0.75}\\\Rightarrow\ y=\frac{3.75\times0.75}{1.5}\\\Rightarrow\ y=1.875

We need to mix 1.875 quarts of grape juice with 3.75 quarts of sparkling water.


4 0
3 years ago
twenty students went to a fast food restaurant everyone ordered a hamburger and a drink hamburgers cost 3.25 each and drinks cos
Natali5045456 [20]

Answer:

g fggggerbhyujgtvfrdc

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
2 different questions
spin [16.1K]

Answer:

950 and 950

Step-by-step explanation:

Lets just get this done :

10 x 50 = 500

9 x 50 = 450

500 + 450 =

950

---

20 x 50 = 1000

1000 - 50 = 950

Hope this helps!

5 0
3 years ago
Read 2 more answers
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