1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
madreJ [45]
3 years ago
9

If the diameter of a circle is 142.8 milimeters, then what is the radius

Mathematics
1 answer:
Katen [24]3 years ago
3 0
O raio é de 71,4 milímetros
142,8mm/2 = 71,4
You might be interested in
A typical cup of coffee contains about 100 mg of caffeine and every hour approximately 16% ofthe amount of caffeine inthe body i
Over [174]

Answer:

a) \frac{dC}{dt} = rC

And for this case we can rewrite the model like this:

\frac{dC}{C} = r dt

If we integrate both sides we got:

ln C = rt + k

If we use exponentials for both sides we got:

C = e^{rt} e^k = C_o e^{rt}

For this case C_o = 100 mg and r = -0.16

So then our model would be given by:

C(t) = 100 e^{-0.16 t}

Where t represent the number of hours

b) C(5) = 100 e^{-0.16*5}= 44.9329

Step-by-step explanation:

Part a

For this case we can assume the proportional model given by:

\frac{dC}{dt} = rC

And for this case we can rewrite the model like this:

\frac{dC}{C} = r dt

If we integrate both sides we got:

ln C = rt + k

If we use exponentials for both sides we got:

C = e^{rt} e^k = C_o e^{rt}

For this case C_o = 100 mg and r = -0.16

So then our model would be given by:

C(t) = 100 e^{-0.16 t}

Where t represent the number of hours

Part b

For this case we can replace the value t=5 into the model and we got:

C(5) = 100 e^{-0.16*5}= 44.9329

7 0
3 years ago
How do you answer number 5
riadik2000 [5.3K]

x² - x - 6  = (x +3)(x - 2)

x² - 5x + 6 = (x - 2)(x - 3)

What is their common factor?

Answer: B. x - 2

5 0
3 years ago
25 points please help me
GuDViN [60]

Answer:

I can help you with C and I tis non-linear because to make it linear it needs to be a straight line and shouldn't have any curves.

Step-by-step explanation:

5 0
3 years ago
What are the solutions to the equation x2 + 4x – 12 = 0?
Alik [6]

Answer:

Step-by-step explanation:

X=2,-6

8 0
2 years ago
Plz, help!!!!!!!!!!!
olchik [2.2K]

Answer:

<h3>Hmm, I think it might be 2 because its just a smaller version of the other triangles but if its wrong then the possible answer is 5 cause 5 looks just like 1 don't ya think?</h3>

8 0
3 years ago
Other questions:
  • 2 PART QUESTION!!
    13·1 answer
  • Find the non permissible replacement for b in this expression b-1/b-1
    7·1 answer
  • 4x to the 2nd power minus 12
    10·1 answer
  • Failure to adequately plan for retirement can result in
    6·1 answer
  • Pls help<br> simplify 24x2 − 52x + 20
    13·2 answers
  • at Sam's sandwich shop, toni ate 3/4 of a medium sandwich, Becky ate 3/4 of a small sandwich, and Mary jo ate 6/8 of a medium sa
    8·1 answer
  • B + 5/14 ; b=5/7<br> Help, please
    13·1 answer
  • Can anyone show me how to figure this out.
    15·1 answer
  • Find the missing side
    9·2 answers
  • Need help with this question​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!