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kirill [66]
3 years ago
14

(8b+12)+(3n+6)+(9b-4)

Mathematics
2 answers:
charle [14.2K]3 years ago
7 0

Answer:

Step-by-step explanation:

(8b+12)+(3n+6)+(9b-4)

Remove the parentheses:

8b+12+3n+6+9b-4

Group like terms:

8b+9b+3n+12+6-4

Add the similar element:8b+9b=17b

=17b+3n+12+6-4

add/subtract the numbers:12+6-4=14

=17b+3n+14

Bas_tet [7]3 years ago
5 0

Answer:

17b+3n+14

Step-by-step explanation:

no any step

okk

finished

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The half-life of radium-226 is 1600 years. Suppose we have a 27-mg sample.
slega [8]

A function m(t)= m₀e^(-rt) that models the mass remaining after t years is; m(t) = 27e^(-0.00043t)

The amount of sample that will remain after 4000 years is; 4.8357 mg

The number of years that it will take for only 17 mg of the sample to remain is;  1076 years

<h3>How to solve exponential decay function?</h3>

A) Using the model for radioactive decay;

m(t)= m₀e^(-rt)

where;

m₀ is initial mass

r is rate of growth

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Thus, we are given;

m₀ = 27 mg

r = (In 2)/1600 = -0.00043 which shows a decrease by 0.00043

and so we have;

m(t) = 27e^(-0.00043t)

c) The amount that will remain after 4000 years is;

m(4000) = 27e^(-0.00043 * 4000)

m(4000) = 27 * 0.1791

m(4000) = 4.8357 mg

d) For 17 mg to remain;

17 = 27e^(-0.00043 * t)

17/27 = e^(-0.00043 * t)

In(17/27) = -0.00043 * t

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Read more about Exponential decay function at; brainly.com/question/27822382

#SPJ1

5 0
1 year ago
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Leviafan [203]

Answer:

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Step-by-step explanation:

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si el número fuera par, por ejemplo 982, sería positivo.

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