Question

help

Answer 1

\(\color{red}{question :) Plz}\)

Answer 2

please what is your question?

Answer 3

The decay of 923 mg of an isotope described by the function A(t)= 923e-0.027t, where t is time in years. Find the amount left after 76 years. Round your answer to the nearest mg. Show all of your work for full credit.

Answer 4

A(t)= 923e^-0.027t

Answer 5

@Nnesha

Answer 6

@Michele_Laino

Answer 7

after 76 years you have:
your amount=
\[A(76)=923*e ^{-(0.027*76)}=...\]
please complete the calculus above.

Answer 8

118.584908865802 ?? @Michele_Laino

Answer 9

I got 614.98.

Answer 10

i will do it again @Michele_Laino

Answer 11

i got 118.584908865802.... @Michele_Laino

Answer 12

Please I do it again

Answer 13

I got 614.98 !!!!!!!!!!!!!

Answer 14

@Michele_Laino

Answer 15

please wait a moment...

Answer 16

\[A(t) = 923x e^{-0.027t}\]
\[A(76) = 923e ^{-0.027(76)}\]

Answer 17

\[A(76) = 923e ^{-2.052}\]

Answer 18

Is this the answer? @BPDlkeme234

Answer 19

\[A(76) =923 x (0.128477691)\]

Answer 20

I get 118.63

Answer 21

A(76) = 118.5849089

Answer 22

chappy, you got it yourself earlier!

Answer 23

hahaha @Michele_Laino @BPDlkeme234 Well Thank you so much

Answer 24

thank you! nevertheless I do it another time

Answer 25

Its okay! you helped me a lot ! thank you so much :) @Michele_Laino

Answer 26

thank you, again!

Answer 27

@chappy I did the calculus with Microsoft Excel, and I got your early answer, namely 118.43

Answer 28

I used mathway... haha so I basically cheated.. @Michele_Laino

Answer 29

what a naughty girl! LOL

Answer 30

haha @BPDlkeme234

Answer 31

@chappy0729 I did the same calculus with my logarithm tables, and I got 118.9 another time!

Answer 32

Michele_Laino, only difference is round-off error, which is why I left it until last minute

Answer 33

@Michele_Laino

Answer 34

@BPDlkeme234 yes I know, you are right!