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Zolol [24]
3 years ago
13

Please help & explain! 45 points :)

Mathematics
1 answer:
jek_recluse [69]3 years ago
4 0
Hello there,

the answer you are looking for will be
a) it has reflectional symmetry with 16 lines of symmetry
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A sample of bacteria is decaying according to a half-life model. If the sample begins with 800 bacteria, and after 13 minutes th
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Answer:

56.42 minutes

Step-by-step explanation:

The initial sample= y0 = 800

After 13 minutes , amount = 320

Y= y0e-kt

320 = 800e-k(13)

320/800 = e-k13

0.4 = e-k13

In0.4 = -k13

-0.91629= -k13

0.07048= k

Y = 800e-0.07048t

Minutes when the bacterial present will be 15

15 = 800e-0.07048t

15/800= e-0.07048t

0.01875 = e-0.07048t

In 0.01875 = -0.07048t

-3.97656 = -0.07048t

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56.42 = t

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