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Semmy [17]
4 years ago
12

An epidemiologist is observing the decay pattern of a pathogenic bacteria after applying a vaccine. He starts with 1,000 bacteri

a that decay at a rate of 8% per hour. He will check on the bacteria in 48 hours. How many bacteria will he find? Round your answer to the nearest whole number.
Mathematics
2 answers:
Radda [10]4 years ago
7 0

Answer:

21

Step-by-step explanation:

Identify the value of each variable in the formula. Be sure to put the percent in decimal form. Be sure the units match—the rate is per hour and the time is in hours.

AA0rt=?=1000=−0.08/hour=48hours

Substitute the values in the formula.

AA=A0ert=1,000e−0.08⋅48

Compute the amount.

A≈21.49

Round to the nearest whole number.

A≈21

Zielflug [23.3K]4 years ago
6 0

Answer:

8%=1 hour

?=48 hours

48×8

384

1000-384

616 bacteria

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Math help @Alessandroarenas
frez [133]

Accordinly to the details, i think that A could work.

7 0
4 years ago
What is x?? I'm so confused!
LiRa [457]

Answer:

x = 468%

Step-by-step explanation:

I see a proportion here.

we want to solve for the variable x in the proportion:

18% / (2 weeks) =   ( x %) / (52 weeks)

here we should multiply 52 to boths sides

(52 weeks) * 18%  / (2 weeks) =   x %

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3 0
3 years ago
The sum of eight and a number is one hundred. What is the number?
KonstantinChe [14]
Salutations!

Let the number be x

Your equation would be x+8=100

Now that we have our equation, lets solve this!

Solve this by keeping the variables aside, and the numbers aside

x=100 -8

The sign would change because your are isolating the number

x=100-8

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Hope I helped (:

Have a great day!
8 0
3 years ago
Read 2 more answers
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mezya [45]

Answer:

a=9in

Step-by-step explanation:

Pythagoreans Theorem

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a^2=81

(take square root of both sides)

a=9

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