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Soloha48 [4]
2 years ago
6

Please fast,please fast

Mathematics
1 answer:
wariber [46]2 years ago
5 0

Answer:

65536 mold spores

Step-by-step explanation:

After 3 hours , 4² mold spores are growing.

After 6 hours , 4³ mold spores are growing.

After 9 hours , 4⁴ mold spores are growing.

After 12 hours , 4⁵ mold spores are growing.

It means in every 3 hours , 4 new spores form and grow from each pre-existing spore.

⇒ After 15 hours , 4⁶ mold spores are growing.

⇒ After 18 hours , 4⁷ mold spores are growing.

⇒ After 21 hours , 4⁸ = 65536 mold spores are growing

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Answer:

Step-by-step explanation:

Circumference = 73.51

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3 years ago
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Jordan gets paid to mow his neighbor's lawn. For every week that he mows the lawn, he earns $20. What is the rule as an algebrai
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A poll reported that 66% of adults were satisfied with the job the major airlines were doing. Suppose 20 adults are selected at
NARA [144]

Answer:

0.5640

Step-by-step explanation:

n = 12 (number of adults)

p = 0.65 (probability that an adult is satisfied with the job the major airlines were doing.

x = number of adults out of 11 who were satisfied.

a)

P( x = 5) = 11C5 (0.65)^5 (0.35)^6 = 0.0986

b)

P( x < 3) = P(x=0)+P(x=1)+P(x=2)

P( x =0) = 11C0 (0.65)^0 (0.35)^11 = 0.0000

P( x =1) = 11C1 (0.65)^1 (0.35)^10 = 0.0002

P( x =2) = 11C2 (0.65)^2 (0.35)^9 = 0.0018

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c)

P( x ≥ 8) = P(x=8)+P(x=9)+P(x=10)+P(x=11)

P( x =8) = 11C8 (0.65)^8 (0.35)^3 = 0.2254

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P( x =10) = 11C10 (0.65)^10 (0.35)^1 = 0.0518

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P( x ≥ 8) = 0.4254

d)

P(x=4)+P(x=5)+P(x=6)+P(x=7)

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P( x =6) = 11C6 (0.65)^6 (0.35)^5 = 0.1830

P( x =7) = 11C7 (0.65)^7 (0.35)^4 = 0.2428

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8 0
3 years ago
According to a report, 11 people got colds for every 2000 people.
lianna [129]

Answer:

Probability that one or more people in Arbalest got a cold is 0.9987.

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We are given that according to a report, 11 people got colds for every 2000 people.

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The above situation can be represented through binomial distribution;

P(X =r) = \binom{n}{r} \times p^{r} \times (1-p)^{n-r};x=0,1,2,3,......

where, n = number of trials (samples) taken = 1200 people

           r = number of success = one or more people got a cold

           p = probability of success which in our question is probability  

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Let X = <u><em>Number of people in Arbalest who got a cold</em></u>

So, X ~ Binom(n = 1200 , p = 0.0055)

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                                  =  1- (1 \times 1 \times 0.9945^{1200})

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Hence, the required probability is 99.87%.

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Step-by-step explanation:

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