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wlad13 [49]
3 years ago
8

At the moment a certain medicine is injected, its concentration in the bloodstream is 120 milligrams per liter. From that moment

forward, the medicine's concentration drops by %30, percent each hour. Write a function that gives the medicine's concentration in milligrams per liter, C(t), t hours after the medicine was injected.
Mathematics
1 answer:
Jobisdone [24]3 years ago
5 0

Answer:

C(t)= D-(30Dt/100)

Step-by-step explanation:

C(t)= 120-(30*120*1h)/100   C(t)=84

C(t)= 120-(30*120*2h)/100   C(t)=48

C(t)= 120-(30*120*3h)/100   C(t)=12

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Step-by-step explanation:

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5 0
3 years ago
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ludmilkaskok [199]

9514 1404 393

Answer:

  y = -3x^2 -9x +30

Step-by-step explanation:

When a polynomial has a zero at x=p, it has a factor of (x -p). The factors of your quadratic are ...

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3 0
3 years ago
Please help 100 points!!
Naddik [55]

Answer:

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Looking at the second question, it's asking what the probability that the teacher chooses a girl in his class.  There are 15 girls and a total of 27 students in the class so we take the probability by doing 15/27.  We can narrow both the numerator and the denominator using 3 which gives us 5/9.  Therefore, the best option that fits our scenario is option C, 5/9.

Finally, looking at the last question, it's asking what the theoretical probability that the coin will land on heads on the next toss.  Theoretical probability doesn't consider how much times Murray tossed the coin, the only thing it cares about is what the actual probability of tossing a coin is.  Therefore that makes it a 50% chance of landing on a heads and a 50% chance of landing on a tails.  The best option that first our scenario is option B, 1/2.

<u><em>Hope this helps!  Let me know if you have any questions</em></u>

7 0
2 years ago
Read 2 more answers
there are four Defenders on a soccer team that this represents 20% of the players on the team which equation can be used to find
gladu [14]
4=(total players on the team) x 0.2
(total players on the team) = 4/0.2
(total players on the team) = 20
****
20% is the same as 0.2.
2 is 20% of 10.
to find 10, divide 2 by 0.2
2/0.2=10
4 is 20% of something
to find 'something', divide 4 by 0.2
4/0.2=20
7 0
3 years ago
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