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Fofino [41]
4 years ago
8

50 POINTS FOR CORRECT ANSWER @PlatoNation REPORTED IF INCORRECT

Mathematics
1 answer:
aleksandrvk [35]4 years ago
3 0

Answer:

About 2614 years.

Step-by-step explanation:

We are given k, and the information that N/N0 = 0.77, so the C-14 function becomes:

N=N_0\cdot e^{-kt} \\0.77N_0 = N_0\cdot e^{-kt}\\0.77 = e^{-0.0001 t}

and we can solve for t:

0.77 = e^{-0.0001 t}\\\ln0.77 = \ln e^{-0.0001 t}\\\ln 0.77 = -0.0001 t\implies\\t = -\frac{\ln0.77}{0.0001}=2613.65\approx 2614\,\,\,\mbox{years}

The estimated age of the bird skeleton is 2614 years.

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Evaluate v(x)=12-2x-5.8 when x =-2,0, and 5
Nata [24]

Answer:

Step-by-step explanation:

<u>Is this equation written correctly?:</u>

<u></u>

v(x)=12-2x-5.8

v(x) = -2x+6.2

v(-2) = -2(-2)+6.2

<u>v(-2) = 2.3</u>

v(0) = -2(0)+6.2

<u>v(0) = 6.2</u>

v(-5) = -2(-5)+6.2

v(-5) = 10+6.2

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5 0
3 years ago
-3(2x+2)&lt;10 thank you in advance
pshichka [43]

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2 years ago
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Dafna11 [192]

Answer:

By a quick online search, i found two tape diagrams:

13) You: -

     Friend: - -

So you have one block, and your friend has two.

We know that you work for 3 hours, this means that your only block must represent 3 hours.

And all the blocks represent the same amount of time, then each one of the two blocks of your friend also represents 3 hours.

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14) You: -

     Friend: - - - - -

In this case, you still have only one block, but now your friend has 5.

Using the same reasoning as above, we can conclude that each block represents 3 hours, and your friend has 5 of them, this means that he tutored for:

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4 0
3 years ago
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damaskus [11]
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Step-by-step explanation:

x+x=66

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3 0
3 years ago
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