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3 years ago

Whats does d = in the equation 38 = 3d - -8

Mathematics

2 answers:

andrey2020 [161]3 years ago

5 0

Answer:

D=10

Step-by-step explanation:

38=3d -(-8)

38=3d+8

38-8=3d+(8-8)

30=3d

30/3=3d/3

10=d

=3d+

docker41 [41]3 years ago

5 0

Your answer would be D=10 because you move the like terms Move variable to the left-hand side and change its sign then Move constant to the right-hand side and change its sign then calculate the difference last thing you do is Divide both sides of the equation by

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In the formula A(t) = A0ekt, A(t) is the amount of radioactive material remaining from an initial amount A0 at a given time t an

Alenkasestr [34]

Answer: 693 years

Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

$A(t) =A_0e^{kt}$

k = rate constant

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$A_t$ = amount of the reactant left = $A_0-\frac{0.1}{100}\times A_0=0.999A_0$

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for half life : $t=t_\frac{1}{2}$

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Putting in the values , we get

$\frac{1}{2}A_0=A_0e^{-0.001\times t_\frac{1}{2}$

$t_\frac{1}{2}=693 years$

Thus half life of this isotope, to the nearest year is 693.

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Ad libitum [116K]

Answer:

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Step-by-step explanation:

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oksano4ka [1.4K]

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