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3 years ago

Will the answer to the problem -4^2 be positive or negative? (Please type either the word positive or the word negative.)

Mathematics

1 answer:

umka2103 [35]3 years ago

7 0

=2 so positive your welcome.

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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

t = time taken for decomposition = 1

$A_0$ = Initial amount of the reactant

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

$0.999A_0=A_0e^{k\times 1}$

$0.999=e^k$

$k=-0.001year^{-1}$

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

$A_t=\frac{1}{2}A_o$

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.

8 0

3 years ago

Which transformation is a translation?

astra-53 [7]

Answer:

[2] Translation

[4]Transformation

Step-by-step explanation:

Translation is just moving the shape.

Transformation is changing the shape and tilting it changed the shape.

7 0

3 years ago

there are 100 movies at the store 30/100 are action movies 50/100 are comedies and 20/100 are adventure movies what part of the

pogonyaev

Answer:30 action and 50 comedies which is 80/100 or 80%/100%

Step-by-step explanation:

8 0

3 years ago

Data management:<br><br> Find n if <br><br> C ( n+ 2 , 2 ) = 36

Lana71 [14]

Please, Karla, explain what "C" and "n" represent. Are you talking about combinations (for example, n+2 objects taken n at a time? Or is C some kind of function? I don't quite see the relationship of this problem to 'data management.'

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3 years ago

Please help me it’s due in 12 minutes also pls explain why

Lisa [10]

Root 25 is the rational number as it equals 5

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2 years ago