Virus

We have a virus that lives one hour. Every half hour produce two child viruses. What will be the living population of the virus after 3.5 hours?

Result

x =  1224

Solution:

0.0h @ n=1 0.5h @ n=1+20=3 1.0h @ n=3+61=8 1.5h @ n=8+162=22 2.0h @ n=22+446=60 2.5h @ n=60+12016=164 3.0h @ n=164+32844=448 3.5h @ n=448+896120=1224 x=12240.0 h \ @ \ n = 1 \ \\ 0.5 h \ @ \ n = 1 + 2 - 0= 3 \ \\ 1.0 h \ @ \ n = 3 + 6 - 1= 8 \ \\ 1.5 h \ @ \ n = 8 + 16 - 2= 22 \ \\ 2.0 h \ @ \ n = 22 + 44 - 6= 60 \ \\ 2.5 h \ @ \ n = 60 + 120 - 16= 164 \ \\ 3.0 h \ @ \ n = 164 + 328 - 44= 448 \ \\ 3.5 h \ @ \ n = 448 + 896 - 120= 1224 \ \\ x=1224



Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




Following knowledge from mathematics are needed to solve this word math problem:

Next similar math problems:

  1. Population
    population_2 What is the population of the city with 3% annual growth, if in 10 years the city will have 60,000 residents?
  2. Seats
    divadlo_2 Seats in the sport hall are organized so that each subsequent row has five more seats. First has 10 seats. How many seats are: a) in the eighth row b) in the eighteenth row
  3. Multiples
    numbers2_7 Find all multiples of 10 that are larger than 136 and smaller than 214.
  4. Median
    statistics The number of missed hours was recorded in 11 pupils: 5,12,6,8,10,7,5,110,2,5,6. Determine the median.
  5. Scalar product
    vectors_sum0_2 Calculate the scalar product of two vectors: (2.5) (-1, -4)
  6. Theorem prove
    thales_1 We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
  7. Logarithm
    log_hat Determine the number whose decimal logarithm is -3.8.
  8. Trinity
    trojka How many different triads can be selected from the group 43 students?
  9. Six terms
    sequence_geo_3 Find the first six terms of the sequence a1 = -3, an = 2 * an-1
  10. 75th percentile (quartille Q3)
    statistics Find 75th percentile for 30,42,42,46,46,46,50,50,54
  11. Sequence - 5 members
    schody Write first five members of the sequence ?
  12. Classroom 4
    skola_1 In a class of 36 pupils, 2/3 are girls. How much it is in a class girls and boys?
  13. Geometric progression
    fractal Fill 4 numbers between 4 and -12500 to form geometric progression.
  14. Complex number coordinates
    complex_numbers Which coordinates show the location of -2+3i
  15. Discriminant
    Quadratic_equation_discriminant Determine the discriminant of the equation: ?
  16. Number
    numbers_10 Which number is 17 times larger than the number 6?
  17. Log
    log if ?, what is b?