4 years ago

BRAINLIESTT ASAP! MATH EXPERT PLEASE HELP ME :)

Mathematics

1 answer:

Inga [223]4 years ago

3 0

Answer:

Step-by-step explanation:

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The age of the Hawaiian islands gets older as you move from east to west. If the half-life of K-40 is 1.3 billion years, approxi

Mumz [18]

Answer:

$t \approx 750550.12\,yr$

Step-by-step explanation:

The time constant of the isotope is:

$\tau = \frac{1.3\times 10^{9}\,yr}{\ln 2}$

$\tau \approx 1.876 \times 10^{9}\,yr$

The decay of the isotope is described by the following model:

$\frac{m}{m_{o}} = e^{-\frac{t}{\tau} }$

Now, the time is cleared in the equation:

$t = -\tau \cdot \ln \frac{m}{m_{o}}$

$t = - (1.876\times 10^{9}\,yr)\cdot \ln 0.9996$

$t \approx 750550.12\,yr$

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3 years ago

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Michael could save about 95 minutes by taking the train.

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3 years ago

Evaluate -2x2 y, if x = -3 and y = -1

Gre4nikov [31]

The answer is -12
these are the steps on how to find that
-2x2y
-2(-3)2(y)
6 times -2
-12

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3 years ago

a cylindrical tank with radius 3 m is being filled with water at a rate of 3 m3/min. how fast is the height of the water increas

JulsSmile [24]

Answer:

≈0.14m/min

Step-by-step explanation:

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3 years ago

The graph of the equation -5x + By=18 is a line that passes through (-6,-2)

g100num [7]

Answer:

Step-by-step explanation:

B(Y)=5x+18

input the values

-2B=5(-6)+18

-2B=-30+18

-2B=-12

B=-12/-2

B=6

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2 years ago