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Dvinal [7]
2 years ago
15

A class has 6 boys and 14 girls. What is the ratio in simplest form that compares number of boys to total number of students?

Mathematics
1 answer:
snow_tiger [21]2 years ago
5 0
C) 3:7
hope this is helpful!
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Which expression is equivalent to –21.8 – (–18.3)?
shepuryov [24]
-21.8+18.3
or 18.3-21.8
or the answer which is -3.5
5 0
3 years ago
Read 2 more answers
100x56 Show work for brsinly
ratelena [41]

Answer:

5600

Step-by-step explanation:

100 times 56 = 5600 because you add the two zeros from the 100 to 56, etc.

6 0
3 years ago
Grade 8 math question plz show work
Nimfa-mama [501]
A. The population would be 120

You would find 20 percent of 100
To do that, you do 100× 0.2 and add that to 100

B. The population doubles

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hope this helps!
6 0
3 years ago
Suppose that you take 120 mg of an antibiotic every 4 hr. The​ half-life of the drug is 4 hr​ (the time it takes for half of the
vodomira [7]

Answer:

The steady state amount of antibiotic in the bloodstream when t --> ∞ is 240 mg.

Step-by-step explanation:

Let the amount of antibiotic in one's bloodstream be given as Aₙ (where n = the number of half lives since the start of usage)

Let's follow the time line of events.

At t = 0 hr, the drug is taken

A₀ = 120 mg

At t = 4 hrs, n = 1, the drug is taken again

A₁ = (0.5×A₀) + 120

A₁ = (0.5×120) + 120 = 180 mg

At t = 8 hrs, n = 2, the drug is taken again,

A₂ = (0.5×A₁) + 120

A₂ = (0.5×180) + 120 = 210 mg

At t = 12 hrs, n = 3, the drug is taken again

A₃ = (0.5×A₂) + 120

A₃ = (0.5×210) + 120 = 225 mg

At this point, it becomes evident that at t = 4n hrs, n = n i.e. n half lives later, the general formula for the amount of the antibiotic in the bloodstream is

Aₙ = 0.5Aₙ₋₁ + 120

where Aₙ₋₁ = The amount of antibiotic in the bloodstream at the time t = 4(n-1) and (n-1) half lives later.

For infinite series, that are increasing in this order, as the value of n --> ∞,

Aₙ = Aₙ₋₁ = K

And our general formula becomes

K = 0.5K + 120

0.5K = 120

K = (120/0.5)

K = 240 mg

Hence, the steady state amount of antibiotic in the bloodstream when t --> ∞ is 240 mg.

Hope this Helps!!!

5 0
3 years ago
What is the factorization of the expression below?
sweet-ann [11.9K]

Answer:

Step-by-step explanation:

Dang kid

4 0
2 years ago
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